Problem of resetting the flag with ProcessingOption DebugRFC="On"

When I use the ProcessingOption DebugRFC=On
the execution goes into the debug mode for the function call.
After commenting the script line... it still goes into the debug mode. How can I overcome this?

please use

ProcessingOption DebugRFC="On"
Call ...
ProcessingOption DebugRFC="Off"

i.e. the Call does not reset the flag.