BASSOCIATE command
Associates an action with a parameter in a dynamic block definition.

Disclaimer
Creating and editing dynamic block definitions under BEDIT in Experimental mode is an experimental feature which may not yet be stable, and could be removed in the future.
Use the MANAGEEXPERIMENTALFEATURES command (or the EXPERIMENTALMODE system variable) to turn on or off experimental features, then restart BricsCAD®.
The Experimental mode is turned off by default.
Important: In the event that you purchase BricsCAD® in the U.S. or for use in the U.S., this feature is neither available nor licensed to you. Please see EULA for more information.
Method
Select the action with no associated parameter, then select the new parameter to associate the action with.