🚀 go-pugleaf

I need some help with this small line of script:
app.findPreferences = null;
app.changePreferences = null;
myStory=app.selection[0].parentStory;
mySearch = myStory.search("^t");
myCount = mySearch.length;
myString = myStory.contents;
for (i=myCount-1; i>=0; i--)
	{
	myTab = myString.indexOf("\t",myCount);
	alert ("Count is "+myTab);
	}

I am trying to get the character posion (Index) of each tab character. There are 3 in my text, it loops 3 times, but I only get the 1st reference for each 3 tabs.

I know Dave has shown me something similar, but I am at home, and all my other stuff is at work!

Cheers

Roy