I am not finding compSlabID in attribute.

[LeeJaeYoung]

1. I can't find compSlabID in attribute.

I don't know why you thought slab had a profile ^^

element.wall.profileAttr

element.beamSegment.assemblySegmentData.profileAttr

element.columnSegment.assemblySegmentData.profileAttr

[LeeJaeYoung · Accepted solution]

I found that the composite slab ID is the same as the composite wall ID.

compSlabID = compWallID