Position transitions with SpainTAC Move

Good day!

Thanks to TI, I Have a great time controlling my servo motor :).

I worked with this function:

STPOSMOVE_setPositionStep_mrev(stObj->posMoveHandle, gMotorVars.PosStepInt_MRev, gMotorVars.PosStepFrac_MRev);
I have to set PosStepInt_MRev , PosStepFrac_MRev to go to my target position,

Now, I like to work by Pulse and Direction Like all of Servo drives.

would you please tell me how I can run servo motor in position mode by Pulse and Direction instead of " PosStepInt_MRev , PosStepFrac_MRev "