New to Construct Engine. Need help with the logic!

http://imgur.com/OT73jnz

From my understanding, if "appear" animation is playing and animation frame = 5 then spawn object. These 2 conditions should do the work. Why need On Frame Changed? I dont get it.

After i turned the On Frame Changed off it spawn 3 objects. Why's that?

If the speed of the animation = 20 frames / second. & Assume the game runs at 60 Frames / second.

Then each animation frame is played 3 ticks in a row, hence the condition is 3 ticks true, that is why it spawns 3 objects.

You solved that with 'On Frame Changed'.

i get it now, thank you!!!