Pin width change

Hi, 

 I am writing a code to change the pin width cyclically, and be lwo is my code

sel_pin=css()

if(sel_pin ~>objType == "rect" && sel_pin~>children != nil then

p_width=caadr(sel_path~>bBox)-caar(sel_path~>bBox)

cond(
(p_width<0.2   p_width=0.5)
(p_width<=0.2 && p_width<0.6 p_width=0.6)
(p_width>=0.6 && p_width<1 p_width=1)
(p_width>=1 && p_width<2 p_width=2)
(p_width>=2 p_width=.2)
);end cond

pin_width=p_width
crd1=car(sel_pin~>bBox)
crd2=list(car(crd1)+pin_width cadr(crd1)+pin_width)
sel_pin~>bBox=list(crd1 crd2)
sel_pin~>children~>xy=list(car(crd1)+(pin_width/2.0) cadr(crd1)+(pin_width/2.0))
sel_pin~>children~>height=(pin_width/2)

);end if

When I exucte the code for pin width 0.2, then the Cond statement not changing the p_width to 0.6.

Its taking p_width<0.2 is true when pin width is 0.2.

Please correct me if any thing is wrong