Assign: Expression Activity type 'VisualBasicValue`1' requires compilation in order to run. Please ensure that the workflow has been compiled

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Guys do know why this error happened? Assign: Expression Activity type ‘VisualBasicValue`1’ requires compilation in order to run. Please ensure that the workflow has been compiled. When i try to assign this error appear.

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Hi @Kelvin1

Check the Double Quotation " in your assign activity

Check out the thread

Regards
Gokul

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Hi @Gokul001 thanks for the answer, but when i tried to use in another project there is no error when i run. The error only appear when i use that project. dtFinal.AsEnumerable().Where(Function(a) String.IsNullOrEmpty(a.Field(Of String)(“Email”).ToString) ).CopyToDatatable(), this is my value in assign activity. What do u think about that, do u know how to resolve this problem?

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Change the double quotes here check once @Kelvin1

Regards
Sudharsan

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Ah i see, i was copying the value from 1 project to another project. Is this error because there is different package ?

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Yes @Kelvin1

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As explained in this thread

Windows legacy compatibility project is supporting any kind of double quotes where as Windows compatibility project supports only one kind of double quotes

Regards
Sudharsan

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Thank you so much sir for the help, appreciated it. :slight_smile:

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