How do I do a LTRIM on a variable in ZPL2?

I need to trim leading spaces from a variable I'm sending to a label with ZPL2.

This is what the row of code looks like:


$1HWWRPQT is a variable.

I tried this:


But it returns:


How do I trim the variable?  Do I need something between the ^FD and the LTRIM$()?