Change $(lang_variables)

Is possible to change runtime the language variables?
I should want modify the just loaded license variable $(MUIlicenseVar) and change a dummy-text with a new onebefore use it in the MUI_PAGE_LICENSE page.

I tryed to do this:
After I replaced my dummy text I copied the new text into my $(MUIlicenseVar) but the compiler give me an error.

Thank you

That can't be done. The license text cannot be dynamic. You could, however, create a custom license page.

For example: