C# How to add placement variable into a resource string

This should be easy, but can't find anything to explain it.

Say I am writing something out on console.writeln like:

console.writeln("Jim is a {0} ", xmlscript);

Say I wanted to convert string `"Jim is.." to a resource string in a global resource.resx. It would be:

jimstring jim is a {0}

and I would refer to it in code as

console.writeln(Resources.jimstring)

How to I put the placement variable (xmlscript) (is this what they are called?) into the resource string in console.writeln?

Thanks,

Bob