topic Re: Drawing repeat region if-statement does nothing in 3D Part & Assembly Design

Drawing repeat region if-statement does nothing

C4DG33K — Wed, 03 Dec 2025 10:14:05 GMT

Hi,

is it possible to perform a calculation based on an if-statement in a drawing repeat region relation?

Prerequisite:

Model units: mm Kg s

I would like to multiply mdl_pro_mp_mass by 1000 if model parameter mass_unit is set to g instead of kg.

Something like this:

mass_display = mdl_pro_mp_mass
if mass_unit == "g"
mass_display = mdl_pro_mp_mass * 1000
endif

It's only the IF that doesn't work; the calculation works fine if tested separately.

It works in a Post Regeneration relation in the model (using pro_mp_mass instead of mdl_pro_mp_mass), but I would like to not add the relation in the model.

Tested on both Creo 9.0.3.0 and 11.0.6.0

Any suggestions?

Thanks in advance! 🖖

Re: Drawing repeat region if-statement does nothing

MartinHanak — Wed, 03 Dec 2025 15:08:00 GMT

Hi,

I think you can test parameters mentioned in https://www.youtube.com/watch?v=qiQvnxVwUqk video in Creo 11.0.

Note: I have never done such test,

Note: I got the link when I asked Google ... creo model parameter for units

Re: Drawing repeat region if-statement does nothing

C4DG33K — Fri, 05 Dec 2025 09:57:41 GMT

Hi Martin.
That's nifty but not what I'm looking for.
We don't want to change the model units, just choose a different presented unit on the drawing if the model is very small or have a low mass.

Our models span between parts of a gram (small injection molded polymers) to tens of kilograms (casted and/or turned/milled metal) and would like to present the mass accordingly.

Thanks for the suggestion, will look at it when we update to Creo 11!

🖖

Re: Drawing repeat region if-statement does nothing

MartinHanak — Fri, 05 Dec 2025 11:43:43 GMT

@C4DG33K wrote:

Hi Martin.
That's nifty but not what I'm looking for.
We don't want to change the model units, just choose a different presented unit on the drawing if the model is very small or have a low mass.

Our models span between parts of a gram (small injection molded polymers) to tens of kilograms (casted and/or turned/milled metal) and would like to present the mass accordingly.

Thanks for the suggestion, will look at it when we update to Creo 11!

🖖

Hi,

after little Google searching I found following link

https://community.ptc.com/t5/3D-Part-Assembly-Design/Reporting-Model-Unit-Information-in-a-Repeat-Region/td-p/447126

Unfortunately this solution requires modification of existing models.

Re: Drawing repeat region if-statement does nothing

Voronov — Fri, 05 Dec 2025 19:28:52 GMT

Hi
If I understand what you want correctly, try this.

IF MASS_UNIT == "g" mass=MDL_GENERIC_PRO_MP_MASS*1000 ELSE mass=MDL_GENERIC_PRO_MP_MASS ENDIF

For automatic g/kg switching, I use this

mass=MDL_GENERIC_PRO_MP_MASS IF mass != 0 IF mass < 0.1 massg = MDL_GENERIC_PRO_MP_MASS * 1000 IF massg < 1 massg2 = massg * 100 mass = "0." + rtos(massg2) + " g" ELSE mass= rtos(massg) + " g" ENDIF ELSE mass = rtos(MDL_GENERIC_PRO_MP_MASS) + " kg" ENDIF ENDIF

Re: Drawing repeat region if-statement does nothing

RPN — Sat, 06 Dec 2025 10:00:10 GMT

If you read this Repeat Region Relation , it may help you, but it looks like to have both values in the table, maybe you can hide one column.

Note: Check to display with units, because this is just a unit issue!

Re: Drawing repeat region if-statement does nothing

C4DG33K — Mon, 08 Dec 2025 09:34:02 GMT

Thanks Voronov,

I got it to work with just minor changes to your relation.
I want to use MDL_PRO_MP_MASS instead of the GENERIC.

The weird thing is that I initially started exactly as your first suggestion, but it didn't work.

Now when I pasted your suggestion it worked... Inscrutable are the ways of Creo! 😜

🖖 /C4DG33K