This is the super class for all the evaluate actions of this plugin
this is made necessary to check everytime that the plasm Process is
up and running and the export view is active and not disposed.
AHCM (Another Hard comprehension method)
this method evaluates the string passed as argument to the running plasm
process
NOTE: this method DOESN'T provide anysort of syntax evaluation...this is
done from the underlying Plasm process.