not working Blend animation

[1R1]

Hi, I'm trying to make a simple fade in on a text but the fade isn't animating.
This is what I have done:
step 1->Created an instance object with the text, and animated the blending (when I press the Enter key to preview the animation it is animating fine)
step 2->Inserted a new object of the previous created instance and inserted it on the main document
step 3->I generate the swf with ctrl+enter, I play the animation but the blending is always 100%

I've tried to animate the object by moving it, and when I play the animation it moves. Only the blending isn't animated.
Why it is so?