How do I create a item based event?

Hello. I am new to Construct 2 and have been finding answers to most of my questions. This one i havent been able to.

How do i create an event in my match 3 game that is item based? For example you have to match up so and so amount of a certain block to pass the level in a certain amount of time.

Would i have to go to the particular item needed on that level and create a new behavior that does a countdown every time thats clicked. Then create a countdown event for that item so that every time that match is made it counts down or up for a specific amount.

I am a pure noob, several projct ideas and trying to gather as much info as possible before doing anything, so please forgive me if this is a stupid question. Tried searching on here and on google and i couldnt seem to find anything that fits.

Is there a tutorial that i messed that would help me this? Any and all advice or help is greatly appreciated.

This would be simple enough to make in C2. It's more about exactly what you need, you would need to explain the match 3 properly and what happens for anyone to give proper assistance. It sounds like you would mostly be making use of variables here though rather than behaviours.

Variables okay. Its a match 3 game thats similar to candy crush. You have to collect "acorns" to get to the next level. Lets say you need five acorns to get to level two. I want to be able to show how many acorns have been matched up and how many are left to go.

Var could be the solution. I will keep googling. Thank you.