DataPower

let xml = apim.getvariable('message.body')
xml.item(0).getElementsByTagNameNS(namespace,'Request').item(0).getElementsByTagName('Elementvaluetobeupdated').item(0).textContent = 'updated value'​

message.body is having read/write permissions as per link - https://www.ibm.com/docs/en/api-connect/5.0.x?topic=reference-api-connect-context-variables
Has anyone came across such error ? Please advise.

Hi Sunil,

Unfortunately, only the get functions for the XML DOM API are implemented.  You cannot update the XML DOM by an assignment as you are attempting or by using a DOM API update function such as replaceWholeText as it appears you are attempting to update the text node.  That particular property textContent is not only for current element but I believe it also includes the text content of its children, somewhat of an xsl:value-of type of value. For now the update of XML is best left to using xslt.  You could use a transform.xslt function to pass the DOM and the desired update value to the XSLT, let it do an identity transformation to update the text you desire, and then return the resulting DOM back to the GatewayScript.  I'd suggest you submit a request for enhancement for the addition of the update functions of the DOM API in GatewayScript.

Best Regards,

Steve

let xml = apim.getvariable('message.body')xml.item(0).getElementsByTagNameNS(namespace,'Request').item(0).getElementsByTagName('Elementvaluetobeupdated').item(0).textContent = 'updated value'​