Dynamic field Firefox, WHY?

I have some dynamic fields, that I go to pull of my text of my HTML, in the IE, it works normal, everything very good, everything very well, I was to test in firefox, give some error, it I did not bring the accents and such, I started to read in the site of macromedia, and instead of placing System = true. I put System = false, it works, only that in my dynamic fields, I am placing name of instancias in it, I´m using autosize, looks at what it says for me in the Output.


WARNING: This movie uses features that are not supported in the Flash 5 player
Symbol=produto1_1_mc, layer=Layer 1, frame=1:Flash MX Text Field Instance Name
Symbol=principal_mc, layer=preco1, frame=1:Flash MX Text Field Instance Name
Symbol=principal_mc, layer=preco1, frame=1:Flash MX Text Field Instance Name
Symbol=principal_mc, layer=preco1, frame=1:Flash MX Text Field Instance Name
Symbol=Symbol 1, layer=Layer 1, frame=1:Flash MX Text Field Instance Name