Hi

I have one issue coming up in using Eval . JScriptEvaluate

In our application we are processing several thousands of item using some rule expression . The rule expression will be looking like ( true || true ) && ( true || false || true ), for e . g .

To process this rule expression we are using JScriptEvaluate .

The code used in the application goes like this ,

public static object EvalExpression ( string Expression )

VsaEngine Engine = VsaEngine . CreateEngine ();

return Eval . JScriptEvaluate ( Expression , "unsafe" , Engine );

The problem with this code is, sometimes it gives the following error . I have pasted the error here with its stack trace .

Index was outside the bounds of the array .

at Microsoft . JScript . Stack . Push ( Object item )

at Microsoft . JScript . Eval . DoEvaluate ( Object source , VsaEngine engine , Boolean isUnsafe )

We cannot predict when this error comes . While debugging the error did not show up at all. But in release mode , once in 10 times or so this error comes .

I tried closing the VsaEngine instance and recreate it again .

But it ended up with another exception which says , "Microsoft.Vsa.VsaException: EngineClosed (0x80133011)" .

Can anyone give some idea on how to resolve this issue?

Thanks