Why doesn't this userscript work on Facebook?

Question

I was writing user script for Google Chrome that would automatically open a specific chat tab, but it\'s not working,

I think that it is because the Chat.open

Answer 1

if (domain == face)
{
 Chat.openTab("sam.sebastian1", "Seb") 
}

not

if (domain = face)
{
 Chat.openTab("sam.sebastian1", "Seb") 
}