[MX V8i SS3] Interface - changing width of mid-element

Hello Community :)

I've created an interface input with changing width of one of a middle element from 5.0 to 1.0 [m].
MX says "Invalid combination of data fields". Where have I mistaken? Below part of input:

INTERFAC,MAP TRIA,A1 SLOPES
259,INTI
260,1=MC10,2=IW10,3=IX10,4=-12,5=416495,8=418000
261,1=IGN ,2=ES11,3=RP10,4=5,5=0.50,6=,7=-0.46
261,1=IGN ,2=RP10,3=RU10,4=5,5=0.50,6=,7=-0.14
261,1=IGN ,2=RU10,3=RP11,4=5,5=0.50,6=,7=+0.14
261,1=IGN ,2=RP11,3=IA10,4=5,5=0.50,6=,7=+0.46
261,1=IGN ,2=IA10,3=IA11,4=5,5=5.00,6=,7=+0.05
261,1=TX00,2=IA11,3=    ,4=5,5=    ,6=,7=+0.66667
262,1=TX00,2=ES11,3=    ,4=5,5=    ,6=,7=-0.66667

260,1=MC10,2=IW10,3=IX10,4=-12,5=418000,8=418100
261,1=IGN ,2=ES11,3=RP10,4=5,5=0.50,6=,7=-0.46
261,1=IGN ,2=RP10,3=RU10,4=5,5=0.50,6=,7=-0.14
261,1=IGN ,2=RU10,3=RP11,4=5,5=0.50,6=,7=+0.14
261,1=IGN ,2=RP11,3=IA10,4=5,5=0.50,6=,7=+0.46
261,1=IGN ,2=IA10,3=IA11,4=5,5=5.00,6=,7=+0.05   ,9=1.00,10=+0.05
261,1=TX00,2=IA11,3=    ,4=5,5=    ,6=,7=+0.66667
262,1=TX00,2=ES11,3=    ,4=5,5=    ,6=,7=-0.66667

260,1=MC10,2=IW10,3=IX10,4=-12,5=418100,8=442505
261,1=IGN ,2=ES11,3=RP10,4=5,5=0.50,6=,7=-0.46
261,1=IGN ,2=RP10,3=RU10,4=5,5=0.50,6=,7=-0.14
261,1=IGN ,2=RU10,3=RP11,4=5,5=0.50,6=,7=+0.14
261,1=IGN ,2=RP11,3=IA10,4=5,5=0.50,6=,7=+0.46
261,1=IGN ,2=IA10,3=IA11,4=5,5=1.00,6=,7=+0.05
261,1=TX00,2=IA11,3=    ,4=5,5=    ,6=,7=+0.66667
262,1=TX00,2=ES11,3=    ,4=5,5=    ,6=,7=-0.66667
263

Best regards
Aleksander Zamorski