I had nillable element of type datetime. I needed to set value only when incoming value was datetime, otherwise I had to send null. How to do that?

• Right click on element and select: Statement->Surround with Choice
• Select 1 when condition and otherwise
• In when condition should be something like this: string-length(value)>0
• If condition is true -> insert value
• Click on the element in otherwise section and select “!” in menu. Then: Content->Set explicit Nil

That’s all.