WRONG RESULT IN ABAQUS SUBROTINE GETVRMAVGATNODE

[ZHUWN]

Recently I've been using abaqus to do a project ，and I used the subroutine UMESHMOTION . In the subroutine I use GETVRMAVGATNODE to get the value of cstress，but after calling the subroutine the result in ARRAY turns to be zero，however，I do have got some correct value before，and I didn‘t change the code， so I wonder why this thing happens, can anyone do me a favor？Thanks very much！