How to make block which works like a VHS recorder?

How do you trigger said procedure?

Hi, i want to make VHS recorder with no playback (just inserting and putting out tapes). i currently have custom model and tape with badly made procedure.

I am beginner with this stuff and usually i am doing simple mods. Currently i want to make this device. I tried to make procedure for it, enabled GUI for that block and when i want to assign the procedure to the recorder, it says "missing dependencies". I posted 2 screenshots where is my actual attempt. what i am doing wrong and how could i fix it? thanks for any advice.

https://imgur.com/a/geometry dash/s6hlIxk

I just had a look at your Imgur. "missing dependencies" means it's missing required data (like coordinates or the entity interacting with the block). This happens when your procedure expects certain variables but they're not passed in from your block GUI or trigger. Make sure your procedure gets all required dependencies, trigger your procedure from a button or slot interaction.