Gubber Outline layer

Hi i just made first prototyping order. so im not really understand the output procedure for .GML
I couldn’t find .GML in my output folder. anyone can help me pls. Im using Altium 10.

i’ve attached generated-file list

my order no is #87245

hi there,
GML is the board outline layer, different sofware maybe named different, i seen GKO is in your gerber files, it also can be accepted,you only need to confirm the board outline is contained in GML or GKO.