Niagara ribbon width scale over time

[fabiomsilva]

hi, i tried scaling niagara ribbons over time using a ribbon width(using float from curve) or even using the one in iinitialize ribbon Ribbon width in ribbon attribues(my guess is that this one wouldnt work since its only during initialization), but i cant get neither to work.
My ribbons always come out at the same width.

what am i missing?
thanks

[anonymous_user_419878d6]

Under Particle Spawn, initialize the ribbon first.
Then under Particle Update, you can scale the ribbon width.

[GurneyHM02]

Not working for me - what bonehead thing am I doin?