Assembly center of mass - how to obtain time-dependent CM position?

[pwr165523]

Hello,
I have a model of my device already built. When I am using the aggregate mass function, it only gives me the coordinates of CM for the initial machine position. My aim is to see the CM position during the whole simulation.
I have made a measure, defined by such a function:
AGGREGATE_MASS( {PART_1,PART_2, PART_3,PART_4} , 0 ,"CM_Pos" )[1]

I thought, that now the measure will indicate the x position of the assembly, but unfortunatelly there is only one initial value on the graph.
Thanks in advance for helping me. This problem does not let me sleep

 

[pwr165523]

Ok, so today I have found a new source of information that is most likely appropriate in my case.

There is a thread on another Adams forum entitled:
" How to link a marker to determine the location of aggregate mass of an assembly"

Someone responded to that with such a message:
Use GCON and POINT_MASS to visualize and track aggregate CM

http://support.mscsoftware.com/kb/results_kb.cfm?S_ID=1-54323441

Unfortunatelly I don't have acces to that article. Any idea how should I use GCON and POint_Mass together? Thanks in advance.
Best regards, Bartosz