I don't know this program, but I can try to help and I also don't understand English well, so I will use a translator. Try this: there's a conditional button that checks the following: the distance from the center of its position to the cursor (for example, let's say it's 10 units; if the number is less than or equal to 10, count the click; if not, nothing) and whether a person is currently pressing the button. Any button can be configured like this.