You have copied one Standard Family in a Read\Write Library.
You have modified the Family Table to include a parameter in a custom property, as explained, for instance, in this post.
By the way, you don’t want to display, Trailing Zeros, Units String, etc., for this parameter in the custom property.
In order to avoid that, do the following.
- Open one component of the Family with the option “As Custom” and save the file on the disk.
- In the file parameter list, select the parameter, modify its Custom Property Format, removing, for instance, the Trailing Zeros, Units String and save the file.
- In the Content Center Editor, Replace Family Template selecting the modified component.
After that, inserting one family component either with Frame Generator or from the Content Center, the parameter will display as expected in the custom property.