Hi, Attached is a document that describes a proposal to use variables in DFDL. This came out of discussions on tracker item 1699 (Parameters and keying). I have also updated the documents on Choices and Wildcards to incorporate variables. Any feedback would be appreciated. Regards, Geoff Judd Websphere MQ Integrator Development IBM UK Ltd Hursley Telephone: +44-1962-818461 E-mail: JUDDG@uk.ibm.com