Hi,I am trying to do my transformation but I am having a hard time checking for one field but being send multiple times.So when sending an order, I only have one order but within the order I have three service_id, it would look like this in my input fileInput file<service_id>123<service_id><service_id>456<service_id><service_id>789<service_id>The expected Ouput need to look like this<ServiceNumber>123, 456, 789</ServiceNumber>How do I take the above values and concatenate into one field?If I do the below code it will not work because how does it know which service_id it will concat together, since the field names are the same.<ServiceNumber> <xsl:value-of select="concat(service_id, ',', service_id, ',', service_id' "/><ServiceNumber>PLEASE PLEASE HELP...I am so frustrated and stuck.thanks in advance