We have a child template E2T-GENERIC-JAVA-MULTI-JMX-ASG template which has linking to E2T-GENERIC-JAVA-MULTI base template.

By default, value of JMX endpoint coming from base template is {$JMX.ENDPOINT:"{#NAME}"}.

In child template I want to update JMX endpoint with following value: {$JMX.ENDPOINT.START:"{#NAME}"}{HOST.CONN}:{HOST.PORT}{$JMX.ENDPOINT.END:"{#NAME}"}

On clicking on update in item prototype, its showing message "Request send successfully" .

But when we are checking item prototype we could see same value in JMX endpoint as {$JMX.ENDPOINT:"{#NAME}"}.

Steps to reproduce:

Created an empty template: E2T-GENERIC-JAVA-MULTI-JMX-ASG
Linked base JMX template: E2T-GENERIC-JAVA-MULTI-JMX
On item prototype, performed mass update to JMX endpoint value in JMX agent check as below:
JMX endpoint: {$JMX.ENDPOINT.START:"{#NAME}"}{HOST.CONN}:{HOST.PORT}{$JMX.ENDPOINT.END:"{#NAME}"}
After making change, got “Item prototypes updated“ as feedback in frontend.
When checked item prototype again, JMX endpoint was still updated with default value:
JMX endpoint: {$JMX.ENDPOINT:"{#NAME}"}