Can I use readInterrupt block to control subsystem execution?

Hi, I just want to check & test all the blocks in the library. Okay, let’s say I am using the compound block. If I tick “enabled execution” in the compound block, then can I use the readInterrupt block to control the block execution?

Yes, but...

If you tick "Enabled execution" you can use any block expression you like to control it. But the block executes not at the moment of interrupt (as it would if you had ticked "Execute on Interrupt"), but rather on the next control timer interrupt after occurrence of the peripheral interrupt.