I tired that, it gets bad expression errors on the if inc = "something" line
"something" must be replaced with an ascii character or its decimal equivalent.

For instance:

Code:
HSERIN [Inc]
	HSEROUT ["Tx Received", 10]
	if inc = "S" then goto here
        else
        goto there
        endif
If you Tx the letter "S" then your progam will jump to label "here" and execute the code in it, else it will jump to the label "there" and execute a different code. (if you make it different)

You have to fix which ascii character you will send to go to label "here" since any other ascii character will take to label "there"

Al.