Overwrite .out file on each run

Hi, 

When I run OptiStruct I get xxxx.out, then when I run I get xxxx_1.out, then xxxx_2.out on the next run and so one. I am having matlab read my .out file and running OptiStruct through it as I go, so I need it to keep overwriting the file as it goes. How can I make it so I get only one output file that keeps getting overwritten?

Thanks in advance

Edit: Sorry, immediately after I posted this I found a solution. In case anyone happens to be looking for it ever, here it is:

https://insider.altairhyperworks.com/syssettings-save-file/