Using custom plugin output as channel entries param

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I have a module method which spits out a value, in this case a category id:

{exp:myModule:myMethod myParam="myValue"}

If I place this in my template it outputs the correct value, but if I try and use the output from this within a channel entries loop as a parameter it doesn’t work:

{exp:channel:entries channel="news" category="{exp:myModule:myMethod myParam="myValue"}"}

I assume this is a parse-order issue, but I would love to know if anyone has a solution that allows them to use output from a custom plugin/module as a channel entries param.

Any suggestions appreciated,

Moved to Development and Programming by Moderator