Question about Edm dynamic display zone's fill color according to PVs

[lzf neu <lzfneu@live.com>]

Hi,

I want to display the zone's fill color according to PVs.

In my case, rectangle zone's fill color depend on three PVs.

Let's assume PVa, PVb and PVc.

If PVc is equal to zero, then the rectangle's fill color is blue.

If PVa and PVb are both equal to 1, the rectangle zone's fill color is green and yellow blittering alternatively.

if PVa is 0 and PVb and PVc are both 1, then the zone's fill color is green and red blittering alternatively.

I have no idea how to do this by using edm, any help will be appreciated and thanks in advance.

Zhefu