How can I get the prefix of a General Dimension’s tolerance using the API?

AddByTwoiMates(iMateDefinitionOne, iMateDefinitionTwo) creates an iMateResult that links two parts using their respective iMates. But both iMates must be compatible (e.g., both are Insert, Mate, etc.), and you need to reference them correctly.

Common Pitfalls

• iMate names must match exactly—case-sensitive and no typos.
• iMate types must be compatible—you can’t mate a flush with an insert.
• If the iMate is part of a patterned component, the index might shift-use .ItemByName() instead of .Item(index) when possible.

Yes, Inventor’s API does support adding a custom table to a drawing that references an Excel file  and it’s surprisingly straightforward once you know the method.

You're right—using SendKeys isn't the most reliable approach. Instead, you can use AutoCAD's ActiveX API to open a drawing properly in VBA.

Yes, you can access material, designation, and user-defined iProperties through the Inventor API using Document.PropertySets. For example, oDoc.PropertySets('Design Tracking Properties')('Material') gets the material, and custom properties are under 'User Defined Properties'.

In Autodesk Inventor, parameters default to 3 decimal places for display, but you can get full precision by accessing the .Value property directly in VBA/VB.NET, which returns a Double with full internal precision (~15-16 digits). Avoid using .Expression or .FormattedValue if you need raw numeric accuracy.