HELP zeroLenght

[sisa]

Hello!
I'm trying to model the mechanism of shear failure of a column. I put a zeroLenghtSection up the column and I've assigned to it a force-displacement response that would be the column's shear response. It doesn't work but it doesn't warn me about none problema...just it doesen't puts out what there is after the definition of the zeroLenghtSection and when I apply the load (I'm making a pushover analysis) it doesen't converge.
I hope someone can help me because really I don't understand what is wrong!!!
this is the code for a simple cantilever:

wipe
model BasicBuilder -ndm 2 -ndf 3

source sezioneCA_telaio.txt
node 1 0. 0.
node 2 0. 3000.
node 22 0. 3000.

fix 1 1 1 1
equalDOF 22 2 1 3

set IDctrlNode 2
set IDctrlDOF 1
geomTransf Linear 1
element nonlinearBeamColumn 1 1 2 5 $SezTag 1

#sezione zero lenght element
set Vu 50000
set deltay 3.05
set Vr [expr 0.2*$Vu]
set deltau 5.50
set IDtaglio 8
set SezTaglio 4

recorder Node -file provaD.out -node 2 -dof 1 disp
recorder Node -file provaF.out -node 1 -dof 1 reaction
recorder Element -file provaFD -time -node 2 -dof 1 disp

uniaxialMaterial Hysteretic $IDtaglio $Vu $deltay $Vu 3.06 $Vr $deltau -$Vu -$deltay -$Vu -3.06 -$Vr -$deltau 1 1 0 0
section Uniaxial $SezTaglio $IDtaglio Vy

element zeroLenghtSection 7 22 2 $SezTaglio -orient 0 1 0 -1 0 0

puts "sezione costruita" ------------> THIS IS NOT PUTTED OUT

[silvia]

maybe try spelling zeroLenghtSection right....