How the extension lines for the Dimension Line (DL) work? I try to create from our NOI plugin the dimensioning on automatic Element plan in Allplan Precast with extension lines. The dimensioning works, but extension lines not.

I set the code value
ExtensionLineType = eNOI_EXTENSION_LINE_TO_REFERENCE_POINT
(The code for creating dimension line is in attached file DimLineExtensionLineExample.txt).
DL creates the extension lines, but then changes this value to another (as I understand it changes to eNOI_EXTENSION_LINE_TRIMMED_BY_POLYGON) and draws extension lines to 0 along the coordinates (screenshot).

After that, I went to settings of the DL I created and the settings indicated "Bounded by user polyline", although for some reason in the viewport it was set as the right DL. After exiting the settings, it is built incorrectly again.

Can it be, because there are specialties in dimensioning on the automatic element plan in Allplan Precast?