Else-If / If-Else via declarative provisioning?

Without having multiple Sync Rules or using a rules extension, how might I produce the following attribute flow:

if 'attrib1' equals 'red' flow 'hot'
if 'attrib1' equals 'yellow' flow 'warm'
if 'attrib1' equals 'green' flow 'cold'

I realize IIF can do different actions based on true/false, but how do I consider multiple true/false in a single attribute flow?  I assume this is possible with a custom expression (likethis), but I could use some help writing a sample.

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Mike Crowley | MVP
My Blog -- Planet Technologies

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