How do I create melee combos one after the other?

I am quite new to Construct 2 and I have one of my attack animations down but I am struggling with trying to add my other two attack animations after the first one has finished pressing the same key. So pressing the space bar in quick succession creating a combo. Can someone please help me out. Some tips or how I would go about doing this. Thank you!

Store a value that represents whether you've pressed the key during the animation. Then check the value when the animation finishes- if it is set, then continue to next animation and reset the value. If it isn't set, then don't continue attacking.