How to declare where a document is saved in WriteTextFile

I have upgraded UiPath Studio to version 2022.10.01.
In the previous version, in WriteTextFile, I simply specified the document name.
Now it asks for a VB expression. Please help me, how do I enter it correctly?
I realise that the old spelling is not really appropriate, but it shows the following error


For now, can you try to update UiPath.system.Activites package to 22.10.1?


Thank you. I hadn’t thought to update the packages. Everything works fine now.