Thanks for reaching out to us on PI Square.
I'm a little confused as to what exactly you're looking to accomplish here. Correct me if I'm wrong, but you're working with either PI Vision or PI Processbook, correct? I'm not sure what you mean by "give different times for blinking", are you looking to have a symbol blink at different rates or make sure the blinking of two symbols are offset from one another? Perhaps it you could post an image it might be of some help in determining exactly what your end goal is.
You can create a tag that is counting from 1 till 8 with an Analysis in Asset Framework or Performance Equation (time-scheduled with a period of 1 sec). the values of this tag can can be use together with the multi state option in PI ProcessBook/Vision to highlight the specific symbol.