Problem w/ setInterval to call fscommand in IE

First check out the example in Firefox:

Drag around the points on the graph and notice the text fields (html based) get populated in real time. You can also hit the receive data button to achieve the same thing.

Now try it in IE - only the button works.

View the source code to see the JS I’m working with - a simple setInterval is calling the fscommand that fires the js function every 5 milliseconds in the flash file.

I have no idea what could be causing this since the button populates the fields fine in both browsers…

I can’t for the life of me figure out why this works in Firefox and not IE - any suggestions?