Play and Pause are not working with custom control buttons as expected in iOS

Actually any 2 consecutive requests makes the second one doesn’t work, ex:
player.sendRequest(‘doSeek’)
player.sendRequest(‘doPause’)
do pause won’t work!
except if there’s at leat 500ms space between them .
ex:
player.sendRequest(‘doSeek’)
Timeout(function(){player.sendRequest(‘doPause’)},500)
this will work but after 0.5 sec.
Any solutions for this