The Railo docs site shows this is supported
<cfscript>
storedproc
[blockfactor="number"]
[cachedafter="datetime"]
[cachedwithin="timeSpan"]
[cachename="string"]
[datasource="string"]
[debug="boolean"]
[password="string"]
procedure="string"
[result="string"]
[returncode="boolean"]
[timeout="number"]
[username="string"] {
}
</cfscript>