Using dynamic values

[JSmart913]

I have 2 visuals - one displaying the current month data and one displaying last year same month.  I would like a way to show whether we are up or down this month from last year and since i cannot do conditional formatting based on a value in the other visual - can  i do a dynamic value to show this?  And if so how do i do it?.  It is based of of calculations that I added to the visuals on the web app

[lbendlin]

Consider combining them into a single visual.

[JSmart913]

So I tried this by pulling in the date field but when i use the same period last year the data doesn't pull in - I get the following error:

and I cannot pull in the date field otherwish it messes up the visual.  Thoughts?

[lbendlin]

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[JSmart913]

Company Name	Count of CSID for current April	Count of CSID for Last April
ABD	200	1225
FHN	150	125

[JSmart913]

So this is essentially what i am trying to do