Signals not flashing

[karl1dlp]

Hello there.
I am currently trying to create some unscripted signals and to have flasing lights in one signal state. I followed the instructions on the trainz wiki page but cant get them to flash. Any suggestions?
Here is what it looks like
signals
{
0
{
light 0
}

4
{
light 2
}

7
{
light 1,2
flash 1,1
flash-offset 0,0.5
}

8
{
light 1
}
}