Create multiple global variables in one go

Hi Team,

How can we create multiple global variables (key-value map type) in one go?
I tried using REST API but I can create a single global variable only at one time.

When I tried to create multiple global variables by posting contents in body section, I got below error.

400 Bad Request

java.io.IOException: java.security.PrivilegedActionException:

com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of
com.xebialabs.xlrelease.api.v1.forms.Variable out of START_ARRAY token
at [Source: (org.eclipse.jetty.server.HttpInputOverHTTP); line: 1, column: 2]

Please let me know your thought.

Thanks!