About Variable Annotation Element Parameters in UDFs

You can define the parameters of Annotation Elements to be variable in a UDF. First, you define the parameters for the Annotation Element, then, designate the parameters as variable while you are creating or modifying the UDF. When you place the UDF, you can change the parameter values for those parameters marked as variable, or you can keep the current values. You can define any Annotation Element as variable, if the parent Annotation Feature is also included in the UDF.

Surface Finish, Geometric Tolerance, or Driven Dimension Annotation Elements contain parameters that get created automatically. These parameters and the associated Annotation Elements, are listed in the table below:

Annotation Element	Parameter	Additional Information
Surface Finish	PTC_ROUGHNESS_HEIGHT	For only those Annotation Elements with surface finishes that use roughness_height as a variable text
Geometric Tolerance	PTC_GTOL_PRIMARY_TOL PTC_GTOL_TYPE PTC_GTOL_MATERIAL_CONDITION PTC_GTOL_COMPOSITE_TOL PTC_GTOL_PERUNIT_TOL PTC_GTOL_UNITLENGTH_TOL PTC_GTOL_UNITAREA_TOL PTC_GTOL_PROJECTEDTOLZONE_TOL PTC_GTOL_UNEQUALLYDISPOSED_TOL	Primary tolerance Type Material condition Composite tolerance Per-unit tolerance Unit length Unit area Projected tolerance zone Unequally-disposed tolerance zone
Driven Dimension	PTC_DIM_TOL_VALUE	+ - Symmetric tolerance mode
Driven Dimension	PTC_DIM_LOWER_TOL_VALUE PTC_DIM_UPPER_TOL_VALUE	+ - or Nominal tolerance mode

If the Annotation feature in your UDF contains a Surface Finish, Geometric Tolerance, or Driven Dimension Annotation Element, and it contains a parameter in the above table, then you can make the parameter variable. To do so, define the Var Parameters element when you are creating the UDF and then select Variable in the Select Parameters dialog box. When you place the UDF, you can keep or change the values for these parameters. If you change the value of a variable item when you place the UDF, the corresponding annotation is automatically selected in the graphics window,