how can we change jump strengths based on button hold time

Hi

How can we change the jump strength based on button holding time.I mean if i hold the button or touch for 2 seconds its jump strength should be some 500 and if you hold for 4 seconds it should be some 700(something like that)......etc etc....

Please help me

Thanks in advance.

Add an event with on key held down, and every one sec condition, and a global variable called strength = 0, increment the strength by 150 in the event.

Then add another condition on key released, and as action set the jump length to the global variable strength, and reset strength back to 0.