what is the use of axis input for set rotation.vi

[Nagaa]

in the attached vi  if i give axis as ( 1 , 0 , 0 ) and angle to some 10 object  is rotating 10 degrees

if i keep axis as   ( 20 ,  0 , 0 ) also and if i am giving angle as 10 then also object is rotating 10 degrees only

so for the set rotation.vi what the input axis is exactly doing  ?

thank you