you need to be more accurate than than.
one way for showing playtime and remove it is either in menu, or by
adding a text with the js call with srd hudmaker, and bound it to a switch in
a common event, probably with "button common events" plugin to toggle
ON and OFF with a press of a button.
else explain a bit more on the situation where and why the playtime need to show
and when not (delete teh playtime), so we can give a better solution to your problem.
while this is plugin support, if it is a plugin, which plugin are we talking about?