CHALLENGE: Cameo SysMLv2 Plugin (2026xHF2): : FeatureValue.value representation in a ColumnByExpressionView does not seem to work when the feature value of an attribute has units: Example length = 1.2 [m]

This is not necessarily a Cameo bug, but it isn't so clear how to achieve displaying values assigned to attributes for quantities with units in custom table columns.

Refer to the example under Cameo Help > Other Documentation > SysMLv2 Plugin UserGuide and the section Views customizations' (p.354 as of Cameo 2026xHF2). That example with this part does not work for feature values with units:

 ... as SysML::Systems::AttributeUsage).ownedRelationship as
    KerML::Kernel::FeatureValue).value

The table on reload displays nothing! It works fine with values without units. Note that values with units ARE shown correctly in this Generic Table column:

 view 'Owned Element' : ColumnByFeatureView :> column {
  ref item :>> columnFeature = ownedElement meta Feature;
}

Under the hood a value assigned to a ScalarQuantityValue attribute is an OperatorExpression. There is likely some way of leveraging the following test to access the evaluated expression (where getLength is the callback returning a FeatureValue.value):

if getLength(rowElement) @KerML::Kernel::OperatorExpression ?
  (getLength(rowElement) as KerML::Kernel::OperatorExpression).result 
   else ...

The test hits, but accessing .result still does not display the value with units. If you HACK that test and try to return say 1.11 [m] it only display the magnitude part 1.11 anyway.