Hi all,

I have a block-reference with attributereferences.

One of these references is a calculated field that gives the area of a polyline.

This is its calculation expression:
%<\AcObjProp Object(%<\_ObjId 2129748024>%).Area \f "%lu2">%

where 2129748024 is the ID of the linked polyline.

I'd like to get the expression above in order to extract the object id number (2129748024). My aim is to get the id number and use it to insert a new attribute into the block that will have a calculated field corresponding to the length of the same polyline.

Thanks in advance.