Use of variables

Hello, everyone!I have a variable defined in batch mode, but I want to give it to the List Files/Folders node in the workflow. How do I convert this String variable to a Path variable so that I can use it. “D:\KNIME\knime.exe” -consoleLog -noexit -nosplash -application org.knime.product.KNIMEBATCHAPPLICATION -workflow.variable=“path”,“D:\PCU”,“String” -workflowFile=“D:\knime-workspace\study\pcu.knwf” -reset -nosave --launcher.suppressErrors