if/while ?

can i get z to move up(from present depth) .1" and move to another position and start
another cut ? like z at -.4.... move z up .1"(-.3").....move to new position.... z-.5.

o100 if [#<fin_depth> lt #<depth_of_cut>]
z[.1/1]
o100 else
z#<_safeheight>
o100 endif
g0 x.1 y-.1

#<safeheight> = 2
#<startdepth> = 1
#<fin_depth> = 0.5
#<cut> = 0.1

#1 = #<startdepth> Note the use of #1 as a "working" variable to hold current_Z

O100 WHILE [#1 GT #<fin_depth>]
    G0 Z #1
    #1 = [#1 - #<cut>]
    O101 IF [#1 < #<fin_depth>] ; allow for the last cut being less than <cut> above <fin>
        #1 = #<fin_depth>
    O101 ENDIF
    G1 Z#1
   ....
    Various G-code moves go here
    ....
O101 ENDWHILE

won't this make the end mill go down with each run ? i want the end mill to
come up from current position(-.4 to -.3") - move to new position(x.1 y.1) - go down .1" from
last current position(-.5).

i didn't know which to use ... if ....do ... else.. whoever don't even know if possible
i'm cutting pockets and i don't want the end mill moving along the bottom
as it goes to the next depth. that's it, want to to come up .1" from whatever depth,
move to x.1 y.1 and go deeper .1".