# Function 'intalledges' over surface mesh (meshS)

**URL:** <https://community.freefem.org/t/function-intalledges-over-surface-mesh-meshs/892>\
**Category:** Feature Request\
**Created:** [April 6, 2021, 3:06am UTC](https://community.freefem.org/t/function-intalledges-over-surface-mesh-meshs/892 "2021-04-06T03:06:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fivanci](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@fivanci](https://community.freefem.org/u/fivanci)\
**Post date:** [April 6, 2021, 3:06am UTC](https://community.freefem.org/t/function-intalledges-over-surface-mesh-meshs/892/1 "2021-04-06T03:06:15Z")

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Dear developers,

I am trying to use ‘intalledges’ function over a surface mesh, but I get the following output:  
‘Internal error : intalledges (to do)’.  
FreeFem++ version is 4.7 (on Manjaro OS).

I guess this feature and corresponding functions (such as ‘jump’) are yet to be implemented for surface mesh and surface elements ? In that case, is anyone aware of any ‘work around hack’ to use 2D ‘intalledges’ on general 3D surface mesh ?

Best,  
if