How do I round a variable?

How can I round a variable in the event sheet? I've tried using ceil(), floor(), and round(), and none of them work.

For context, I have the variable Basic_Cost that represents the cost of an item in a store. Every time you buy it, the cost increases by 10%, but this causes decimal points to show up, and I only want a round number.

So, how can I round this variable?

That should work, are you using round then changing the value after in the events? Screenshot of the event could help someone work out where it's gone wrong.

Okay. The value doesn't change anywhere after that though, so I don't know why it doesn't work. (BTW I'm completely new to Construct so it's probably something really obvious)

That's not a normal action, you would use set basiccost to ceil(basiccost) under system like the other events, not sure why you opted for that change. Is that scripting?

Oh thanks, that fixed it. I thought it was supposed to be put in a script, yeah. I'll remember that!

No probs. Scripting is something separate and allows you to use javascript to assist with the events. There are some tutorials about. In general just use add action.