Clearing a local is the same as writing an empty string to the indicator (or another local of it in write mode). Use data flow (may need the help of a single-frame sequence e.g.) to ensure that you have read the local before you write an empty string using another local...
If you have an indicator there must be a value going to it, most likely from a wire. Why do you use a local to read the value of the indicator instead of wiring the value to whereever you need it?
