How to populate Request ID inside Email Template

[Thriller]

I need to populate the Request ID inside an email template. I used the below code, but it doesn't seem to work. Can you please help me?
Request ID: ${substring_index(ars_requests.jbpmprocessinstanceid, '.', -1)}

[Manu269]

@Thriller refer this article : How to send different emails with if else conditio... - Saviynt Forums - 51043

[NM]

@Thriller use ${requestid}

[rushikeshvartak]

${requestid} should work . follow below steps for future

Please validate supported variables.

Purpose :

To get what variables are present to use in the email template.

Email Template steps :

keep Advanced HTML CSS flag is checked

Keep your email Address in TO

TO /CC/BCC & Subject - Don't use any dynamic variables

Add only below code in Email Body
${this.binding.variables.each {RVkey,RVvalue -> println "$RVkey ------- $RVvalue" + "" + "br" + ">"}}

Output : using the below expression. By putting it in the email body, it will print all variable names with values, and then accordingly, you can use it: