Trying to simulate the function of a TVS diode in LTspice

[fubar.gr]

I made the attached circuit in LTspice.

It is a 12 Volt AC source with 50 Volt spikes feeding a 90 Ohm resistor. So I added a SMBJ24CA TVS diode in parallel, expecting it to clamp the voltage to something near 24 Volts.

But it doesn't work. The voltage spikes pass unobstructed to the load.

Am I missing something or is this how the TVS diode is supposed to work?

[tggzzz]

They are ideal voltage sources that can supply infinite current.

Look at the current through the TVS, and insert a resistor between the TV'S and the voltage sources. Resistor value is chosen to set the desired maximum current.