Decimal places in iLogic form

[Curtis_Waguespack]

Problem with decimal places in iLogic form in Inventor 2025. See attached files.

Here is the issue:

I thought I knew how to control this, by handing the value to a variable in a rule, rounding it, and then pushing that rounded value back out to the parameter, like this.

But I'm not getting that to work, now. Not sure if something changed, or...

Does anyone know how to fix this?

Note that some increments display as expected

others do not

[marcin_otręba · Accepted solution]

Hi,

In Inventor 2025, they moved to .NET 8. The change is to use more decimal places when converting a floating point number to a string. Unfortunately, this can introduce noise. 

they suggest to use value.ToString("G1") but it doesn't work,

it works for  me only if i change expression to something without digits after comma before i set real value like :

Dim pr As Inventor.Parameter = ThisDoc.Document.componentdefinition.parameters("Offset2")
Dim v As Double = pr.Value/2.54
pr.Expression=1
pr.Expression =Round(v,1)

also i added this rule to be triggered on parameter change.. 

[Curtis_Waguespack]

Thanks for the reply @marcin_otręba, unfortunately I get the same result:

@MjDeck , do you have a suggestion for getting this to work as expected?

[marcin_otręba]

@Curtis_Waguespack  and did you set rule to be triggered on parameter change ?

[Curtis_Waguespack]

@marcin_otręba,

ooops, it looks like I accidentally dragged it to the wrong event trigger earlier. I just checked again and this does work!
Thanks again!

setting it up like this, works as well:

oTrigger = Offset2
Dim pr As Inventor.Parameter = ThisDoc.Document.componentdefinition.parameters("Offset2")
Dim v As Double = pr.Value/2.54
pr.Expression=1
pr.Expression =Round(v,1)

[MjDeck]

Hi Curtis, thanks for reporting this. I created issue INVGEN-86825 for it. We should be able to fix it soon.