Creo 10.0 introduces two new feature-level parameters that provide precise access to the count of pattern members in a design:
- PTC_ACTUAL_PAT_MEMBERS:
This parameter tracks the actual number of active pattern members in a Pattern feature, excluding any omitted members. It applies to:- Patterns of all types.
- Pattern Recognition features.
- Multi-hole features using a sketch as a placement reference.
This parameter is automatically created when you create a pattern or retrieve a legacy model containing a pattern.
- PTC_TOTAL_PAT_MEMBERS:
This parameter indicates the total number of pattern members in multi-level patterns, excluding omitted members. It applies to:- Two-level Patterns of Patterns.
- Two-level Patterns of Multi-hole features.
- Three-level Patterns of Patterns of Multi-hole features.
For patterns of groups, use Pattern Recognition to determine the count.
Both parameters belong to the pattern header feature, are automatically updated during regeneration, and can be referenced by relations. However, they cannot be edited or deleted.
Creo Parametric 10.0.0.0
User Interface Location: Click Model > Pattern, or right-click a Pattern feature in the Model Tree and select Parameters.

The Parameters dialog box opens.
Benefits
These parameters significantly improve usability and provide greater control over patterns by:
- Allowing direct access to the count of active pattern members.
- Enabling parameter callouts to dynamically display the active instance count.
- Simplifying tasks that previously required complex workarounds to programmatically retrieve the pattern member count.
Additional Information
- Limitations: None reported.
- Replacement of Existing Functionality: No.
- Configuration Option: None required.
This enhancement streamlines workflows involving complex patterns and provides a new level of precision in managing pattern instances. It is especially useful in designs where accurate member counts are critical for downstream calculations or documentation.
For more information, Follow this link.
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