Double adding to parameter

[James Murray]

An object has an optional part at the top. When the user turns the option off, I would like to automatically decrease ZZYZX by the thickness of the optional part. When they turn it on, I would like to increase ZZYZX. This works, except the optional value is added or subtracted twice. Same result in master or parameter script.

IF GLOB_MODPAR_NAME = 'bOption' & bOption THEN
	ZZYZX = ZZYZX + optionThk
	PARAMETERS ZZYZX = ZZYZX
ENDIF
IF GLOB_MODPAR_NAME = 'bOption' & NOT(bOption) THEN
	ZZYZX = ZZYZX - optionThk
	PARAMETERS ZZYZX = ZZYZX
ENDIF

James M

[Barry Kelly]

The parameter script (or master as parameter script) will be run more than once so you need to trap it.
This should help do that.
From the GDL manual …

First Occasion in Progress

n = APPLICATION_QUERY (“parameter_script”, “firstoccasion_in_progress”, isFirstRun)

This command returns whether the current run is the first run or a consequence of a previous execution of the parameter script which changed
some parameters. This command has no additional parameters.
The distinction may be important when a part of the parameter script executes a triggered event – e.g. it handles the pushing of a function button.
isFirstRun: The returned value shows whether the current run is the first run

Barry.

Versions 6.5 to 22
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision M6800 - i7 4700MQ @ 2.40GHz, 16GB RAM, AMD FirePro M6100 (2GB), Windows 7 64bit

[James Murray]

Thanks, Barry , I thought it had to do with multiple executions. Strangely, it works correctly now when placed in the Master (adding and subtracting with the checkbox), but in the Parameter script the identical code always subtracts.

rrr = APPLICATION_QUERY ("parameter_script", "firstoccasion_in_progress", isFirstRun)
IF isFirstRun THEN
	IF GLOB_MODPAR_NAME = 'bOption' THEN
		IF bOption THEN
			ZZYZX = ZZYZX + optionThk
			PARAMETERS ZZYZX = ZZYZX
		ENDIF
		IF NOT(bOption) THEN
			ZZYZX = ZZYZX - optionThk
			PARAMETERS ZZYZX = ZZYZX
		ENDIF
	ENDIF
ENDIF

I’m working around it by using the MS, but it is odd IMO.

James M

[Barry Kelly]

Also now in the Compatibility Options in the Details page there is an option to run the parameter script once.
I haven’t looked into this yet as I haven’t had the need.

Barry.

Attachments:

1. 

   parameter_script.jpg
   

Versions 6.5 to 22
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision M6800 - i7 4700MQ @ 2.40GHz, 16GB RAM, AMD FirePro M6100 (2GB), Windows 7 64bit

[Author]

Posts