Problem with curve widening.

Hi.

 I'm trying to create a widening of my inner curve with the Curve Widening tool in SS4. I've created a .wid file attached bellow and added a rule to my corridor that extends over the curve on both sides but still gets no widening of the curve.

;Rad	wi	li	wo	lo
0	4.4	0	0	0
30	4.4	0	0	0
40	3.6	0	0	0
50	3.0	0	0	0
60	2.6	0	0	0
80	2.1	0	0	0
100	1.8	0	0	0
150	1.4	0	0	0