Animation error when duplicating instances of blueprint

I created a blueprint for some graphics animations in witch the bars grow according to an excel document, that controls its color, text display and its height.
the blueprint is working correctly although when I create several instances of it, in the viewport one of the bars doesn’t behave correctly, if I continue to add more instances of the same bar there will always be one bar that will not display a correct behavior.
Any ideias on how to handle this problem? thanks