UpdateDITAReferences(flag) ExtandScript documentation syntax mismatch

Hi Community, 
According to Adobe FrameMaker Scripting Guide ( https://help.adobe.com/en_US/framemaker/pdfs/framemaker_scripting.pdf ) the paramters of UpdateDITAReferences are docId, flag;

The description of docId is not certain. I do not get errors when I use the Doc object in the place of docId, but I do not get external references updated as well. 

In order for this method to work for me (FM version: 15.0.4.751 ) the syntax was: UpdateDITAReferences(flag); 

I used the integer value of flag to get external references updated:

oDoc.UpdateDITAReferences(0x02);