How do i solve this curtain panel based bug

[arsenekpvtm]

hello i'm new to revit and trying to make sheet metal roof tile using curtain panel pattern based. it appears when i'm applying my roof tile to mass there are these hidden lines like this 

 

and when i go back to edit the family and set it to wireframe viewmode it appears there is no hidden line in my family template

how do i solve this problem 

thanks in advance 🙏

[syman2000]

If you change to other graphic display (IE: hidden line, shaded, consistent), does the line show up? Also is the panel family embedded into adaptive panel or not?

[barthbradley]

Looks to me like unconstrained geometry in the family.  Post the family here if you can't figure it out and we'll fix it.  

[arsenekpvtm]

here is the file sir

[barthbradley · Accepted solution]

Get in the habit of flexing your custom-built families to see if they break.  In this case, I changed the horizontal and vertical spacing and immediately found the problem. Nothing is constrained properly!  

I would suggest putting this family aside and researching how to build a pattern-based curtain panel.  Goggle it. 

Here's a video I found: 

Revit Families Series Custom Curtain Panel Pattern Based How To - Bing video

[arsenekpvtm]

did that and i thought it supposed to behave like that and can be ignored until something is up, didn't know that was the problem this time. Thank you so much sir gotta keep learning