Hi all,

I am running a dynamic analysis in Abaqus/Explicit where I apply impact loading through a VUAMP but I keep getting the following warning:
"in keyword *AMPLITUDE, file "Job-2.inp", line 44431: THE AMPLITUDE CURVE VUAMP. NOTE THAT THE NUMBER OF ARGUMENTS FOR USER SUBROUTINES UAMP AND VUAMP HAVE BEEN CHANGED FOR V6.12. 'THE ARGUMENTS NPROPS AND PROPS HAVE BEEN ADDED. IF THE NUMBER OF ARGUMENTS ARE INCORRECT, THEN THE ANALYSIS WILL NOT RUN PROPERLY. PLEASE READ THE ABAQUS USER SUBROUTINES REFERENCE MANUAL FOR MORE DETAILS."

I have gone and checked the instructions for the v6.12 from this link (http://orpheus.nchc.org.tw:2080/v6.12/books/sub/default.htm?startat=ch01s02asb07.html#sub-rtn-uexpamp) and have adjusted my code accordingly and I have included both arguments in my subroutine but I keep getting the same warning.
My vuamp doesn't work as expected and I want to investigate if this is the issue but I do not know how to fix that.

I would appreciate if anyone has some advice on this matter.