Hello George Papazafeiropoulos
Sorry to bother you so often, but now I have a problem. MATLAB prompt warning: No results corresponding to the specified record key are written in the fil file.Do you know why?

If using this toolbox for research or industrial purposes, please cite:
Advances in Engineering Software. Vol 105. March 2017. Pages 9-16. (2017)
No problem! The Abaqus2Matlab work team is continuously here to solve your problems!
The error that you have reported may happen for two reasons: 1) The requested output variable identifier has not been specified in the Abaqus input file prior to running
2) The record key that is specified as an input argument to the Abaqus2Matlab function that reads the Abaqus results (*.fil) file is not correct.