I'm assuming you are trying to use Add a parameter button to create a parameter. This button adds a parameter to an Object Type. To create a new parameter use the New or Import buttons at the top of the dialog. Import allows you import parameters from a parameter .csv file. To use the Add a parameter button you select the Object Type in left window pane, select a parameters or multiple parameters in the Parameter Pool pane (Add a Parameter only becomes active when both the Object Type and Parameter has been selected, and select Add a parameter button. To verify the parameters were added to the Object Type definition select a different Object Type and then re-select the Object Type you added the parameters to.



Your .csv file for the wire looks fine, you have the minimum number of parameters needed for the definition.
Add on the Fiber Properties dialog will only add parameters that have already been created in the Global Parameters dialog it doesn't create them if they are missing.

If you add the parameters to an Object Type you can set the Object Type in the Fiber Properties and the parameters associated with the Object Type are added.

