robotframework - Return a value from a keyword in [setup] -

in keyword run in setup of test case have timestamp have use later in test case body. best way return test case body? have thought out use test-scope variable ideally pass return parameter.

to illustrate:

*** keywords *** setup keyword     ${ts} =    evaluate    <whatever>  *** test cases *** case1     [setup]    setup keyword     #here need ${ts} 

you can't return values in setup. 2 choices set test level variable in setup keyword (using set test variable keyword), or call setup keyword first step in test rather setup step. prefer former.