Identify order in which Field parameters items were selected?

Same question, since field parameters preserve the order in which they were selected in a matrix visual, i wonder if there is a way to know what the first selection was. For my use case i need to let users select as many dimensions as they want to see. However, there is a Top option that basically by means of a measure discards rows that, grouped by the first field selected, fall outside defined top N values. 
My workaround for this issue was to create two identical field parameters, one of them will act as the "top N field" and the other one as the expansion dimension (working as any field parameter in a matrix).
However it would be awesome to be able to obtain this kind of users interactions data, since as far i know it's not  currently possible