diff --git a/src/Calc/Calc.php b/src/Calc/Calc.php
index 219cb6a..25d1a27 100644
--- a/src/Calc/Calc.php
+++ b/src/Calc/Calc.php
@@ -114,7 +114,11 @@ class Calc
 
                     if($edge->getCalcValue() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue());
-                        eval('$cv = ' . $cv . ';');
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
                         $this->engine->addCalcVariable($option->getId() . '_' . $collection->getName(), $cv);
                         $this->engine->setCalcVaribleStack($cv, $calcValueId);
                     }
@@ -180,4 +184,4 @@ class Calc
         return str_replace(',', '.', $value);
 
     }
-}
\ No newline at end of file
+}
diff --git a/src/Calc/CalcValues.php b/src/Calc/CalcValues.php
index 4c01881..1b7833c 100644
--- a/src/Calc/CalcValues.php
+++ b/src/Calc/CalcValues.php
@@ -115,34 +115,47 @@ class CalcValues
 
                     if ($edge->getCalcValue() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue());
-                        eval('$cv = ' . $cv . ';');
-
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
+                        
                         $this->engine->addCalcVariable($id, $cv);
 
                         $this->engine->addCalcVariable($id . '_' . $collection->getName(), $cv);
                     }
                     if ($edge->getCalcValue1() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue1());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
-
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
+                        
                         $this->engine->addCalcVariable($id . '_1', $cv);
 
                         $this->engine->addCalcVariable($id . '_' . $collection->getName() . '_1', $cv);
                     }
                     if ($edge->getCalcValue2() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue2());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
-
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
+                        
                         $this->engine->addCalcVariable($id . '_2', $cv);
 
                         $this->engine->addCalcVariable($id . '_' . $collection->getName() . '_2', $cv);
                     }
                     if ($edge->getCalcValue3() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue3());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_3', $cv);
 
@@ -150,8 +163,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue4() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue4());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_4', $cv);
 
@@ -159,8 +175,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue5() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue5());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_5', $cv);
 
@@ -168,8 +187,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue6() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue6());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_6', $cv);
 
@@ -177,8 +199,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue7() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue7());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_7', $cv);
 
@@ -186,8 +211,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue8() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue8());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_8', $cv);
 
@@ -195,8 +223,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue9() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue9());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_9', $cv);
 
@@ -204,8 +235,11 @@ class CalcValues
                     }
                     if ($edge->getCalcValue10() != "") {
                         $cv = $this->formelCalc->parse($edge->getCalcValue10());
-                        eval('$cv = ' . $cv . ';');
-                        //echo $id  . ' '. $this->formelCalc->parse($edge->getCalcValue()) . ' ' . $cv . ' '. PHP_EOL.PHP_EOL;
+                        try {
+                            eval('@$cv = ' . $cv . ';');
+                        }catch (\Throwable $e) {
+                            $cv = 0;
+                        }
 
                         $this->engine->addCalcVariable($id . '_10', $cv);