For this to work you must ensure that:
- You are using a Note, not a Comment!
- The display option Show Element Properties is TRUE
If you are only interested in the called-out information, you may wish to set the Text Display Mode to 'Do not show'.
As an alternative in some cases note that: In MagicDraw/Cameo one can display many element properties (and metamodel properties) directly in compartments on most element symbols.