No or, not directly. You'll need to compare an String Array to another one.

If you have only 1 string to act with you can also use the WAIT modifier.

In my case, when i need to jump to several Subroutine with PCTask, i use a simple Byte and Branch(or more than often BRANCHL)

something like

Code:
SubRoutineToBeExecute var byte

Main:
    HSERIN[SubRoutineToBeExecute]
    branch SubRoutineToBeExecute,[Sub1,Sub2,Sub3,Sub4]
    goto Main

Sub1:
    ' stuff here
    goto Main

Sub2:
    ' stuff here
    goto Main

Sub3:
    ' stuff here
    goto Main

Sub4:
    ' stuff here
    goto Main
easier than use this precious Code space to store String stuff IMHO.