Extrude polyline in a null object

[macro81]

Hey guys,
I'm quite new to C4d and I'm having problems extruding correctly polylines in a null object.
I've imported from autocad some polylines and I'm trying to extrude them. If I group them in a null object, select hierarchy, and I enter the movement of 220in, it doesn't seem the extrusion has the correct value. If I try to extrude each individual spline with the extrude nurbs set with the same value of 220in the extrusion is different. The extrusion I should get should be the same even if I use different methods, right?
Do you know why?

[cappellaiomatto]

Hi could you please post a screen shot to understand your trouble?

[macro81]

thank for asking me.
Here are two screen shots. One is the extrusion of the null object imported from Autocad and the other one is the extrusion of a polyline copied from the null obj.
I don't understand why the null object has a negative value of 200in and the single polyline has the same movement but has a positive value on a different axis plus..... it looks different.

[cappellaiomatto]

Hi
I'm not sure, but I think the problem stay on polyline format


Have you try to convert it into spline with make editable command?
Polyline is an interchange format for autocad but I don't know if it's full supported and works well in cinema....

[macro81]

Yes I've tried and it works fine but I lose the single polylines.
I guess is the only way....I thought there was something that I didn't know.
I really appreciate your help.

Thank you

[cappellaiomatto]

Yes I've tried and it works fine but I lose the single polylines.
I guess is the only way....I thought there was something that I didn't know.
I really appreciate your help.

Thank you

Yes it's probably the only way....