copy variables from one keyword test to another

I have seen this question many times and the answer is use projectsuite variable or project variables.  NOT a good answer.  I want to copy the keyword test  with the variable list. I need to change the default values that are in the variable list.  Using a higher level variable makes me change the value during the execution  keyword so  I lose control of the value during execution.  for example I have a keyword test that uses the aqwrite.  I have variables with defaults for the filenamepath and textxcontent.  I have several instances that the filename changes or the textcontent changes.   I am forced to do many set variable instead of being able to copy the variable list and change the defaults.