Thank's for your time Goldenrivet.
I tried to investigate the reason of mistake,one of pilot took a hobbit from previous type on which it's need to push Push Lever Flaps with simultaneous
motion in order to retract or extend F/S surface.
Another one had a problem with a lock sys.(mechanism) during hi workload and havy whight a/c,when time is limit to retract the flaps.And bustle made a mistake together with problem of lock sys Flap's Lever.
When we have our general procedures for retract or extend F/S,I mean palm position describe as above the mistake is minimum.
But the official explanation is absent,may be because it' doesn't matter.By experience the mistake for Captain is absent(May be due to right hand position),of course it's supposition.
Your opinion is highly appreciated and considred!!!