Prevent parameter change from automatically running ilogic rule.

[f_calebh]

I'm sure this question is out there, but I'm having a hard time finding it. How do I prevent a rule from automatically running a referenced parameter when it's changed?  I have a form with multiple user parameter changes and button to run a rule that exports the part as an stl (parameters are used when naming the file). I'm running into an issue where the rule runs whenever a single parameter is changed instead of waiting for the button to be pushed.

[WCrihfield · Accepted solution]

If you are using a local ilogic rule, and a local iLogic form, you will need to make some changes in your code.

Within the local iLogic rule, instead of using the local parameters directly by their names, which causes the name to become blue in recognition of it being a local parameter, you instead need to format these instance differently.

So, instead of using a line like this:

Area = (Length * Width)

(where Area, Length, and Width are all local parameters, and are blue by default)

write it this way instead:

Parameter("Area") = (Parameter("Length) * Parameter("Width"))

This will stop the local rule from automatically running each time one of those local parameters changes.

When using a local ilogic Form, the parameter changes are immediate, unlike when you are using a Global iLogic form.

[WCrihfield]

Also, if you have the local rule set up within the Event Triggers dialog, under something like "Any Model Parameter Change" or "Part Geometry Change", this will cause the rule to run each time you change a parameter within that local iLogic form.  You may need to remove them from those Event Triggers, if you don't need them to be in there.

[f_calebh]

I'll try that out.

One thing I just noticed in the form option was the behavior for a button can be set to "Apply and then Run Rule" or "Apply and then Close and then Run Rule" Using this setting on my button actually allowed me to make all my changes in the form before automatically running the rule. 

[f_calebh]

This is exactly what I needed, thanks. When using the button settings, you couldn't preview the model change because the parameters weren't applying immediately either.