Loading Text from External Sources

I am trying to creta my own loading text I am using the file and action script that chris99022 has written

My text box is named ‘lyrics’

but I am recieving the following error:
'Warning Scene=Scene 1, layer=Layer 1, frame=1:Line 2: The identifier ‘loadVars’ will not resolve to built-in object ‘LoadVars’ at runtime.
loadText = new loadVars();

Total ActionScript Errors: 1 Reported Errors: 1

Could you help me?