Ftview se

hi friends i am using factory talk view SE..in that i am having one trend now i want to put one zoom in and zoom out button,when i press zoom in button i should be able to get an enlarged view of trend ie before pressing zoom in button if 1cm(x-axis)equal to one hour and 1cm(y axis ) equal to 10'C temp...afer pressing should be able to view 1cm(x-axis)equal to 1/2 hour and 1cm(y axis ) equal to 5'C temp..if i press zoom out opposite action should be happened.......is it possible to do so.i think it is possible in intouch...but i want to do it in ftview SE....waiting for ur replay..please help me.