Exrepssion switch statement

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Hello I have a switch statement where i want to perform some task if a certaint variable has something.

My question its, What shall i insert in the expression field ? My variable its of type string and only want the cases to be executed if the variables has something in it

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use String.IsNullOrEmpty(strText) where strText is your string variable. in expression field and change type argument to boolean.

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