Shane Lee wrote:So in the element that matches fms:Appropriation, for every child element fms:GLAccntApp that equals 4754, change the value of fms:CostCentre to 230.
In other words, for every fms:CostCentre which has a sibling fms:GLAccntApp element whose value is 4754 and whose parent is an fms:Appropriation element, change the value to 230.
When you have words like "which" and "whose" in your problem description, then you're going to use predicates in your match. Something like this, maybe: