p:watermark with a bean variable

[someoneyeah]

This is, probably, quite a stupid question, but is it possible to set the p:watermark value as a bean variable. For example, <p:watermark for="someId" value="#{mybean.value}"/>. If it is possible, how should I do it? 10x

[cagatay.civici]

Have you tried doing it? Doesn't it work?

[someoneyeah]

Yes, I have tried. Unfortunately, it does not work for me. Sample from my code:
<h:inputText value="#{openinghours.modExactDay}" size="1" required="false" id="exactDay" />
<p:watermark for="exactDay" value="#{openinghours.selectedSchedule.day}"/>

[EDIT] As it turns out, the value was null, so this is probably why it wasn't working

[cagatay.civici]

Yes, it should work with EL expressions resolving to not-null.