Update 'Schema URL' for 'JSON Schema compliance assertion' via groovy script

We have a project with more than 100 cases where we have added 'JSON Schema Compliance' assertion for each case. 

For every sprint, new json file should be generated hence we are looking for option to update the 'Schema URL' via groovy for every sprint.

Please let us know if we have any options to update the 'Schema URL' with groovy ?