How to use variables with email template

[ishihara]

I am using the service catalog.
I would like to specify variables in email template and display variables on email.
However, I do not know how to specify variables in email template.
How do I specify variables in email template?

[Kalaiarasan Pus]

template.print(current.variables.variablename);

[ishihara]

thank you for your answer.
Do I have to use script to display variables?

[Kalaiarasan Pus]

Are you referring email template or email script or normal notification? All of these are different components.

My response was related to email scripts.

[ishihara]

I refer to the email template.
Is there a way to easily display variables without using email script?