I'm not sure I understand the problem, but I'll try to help. First of all, you don't need to type all that. Instead just have the sketch dimensions displayed when you're creating the property, and click on them when needed to insert them into the property.
Now, there's no need to repeat this process for each size. Instead after saving one profile, just edit the sketch dimensions in the first example and Save as.. to the new file name. If the description property is properly linked to the sketch dimensions then it will update without user input. Repeat for as many sizes as you need.
I appreciate your help, but my problem is little buit different. I try to explain:
When i create some profile(weldment) from my default libraries (.sldlfp) and display it in drawing, in table weldment cut list- description is set already.
When i create some profile from my library (.sldlfp) and display it in drawing, in table weldment cut list is nothing, so i have to add it manualy, everytime when i create new profile.