Plan variable capacity needs to be increased

What is the plan variable capacity in bamboo now, I get the following error when I try to set the variable content to about 700 characters.
Plan 'PC-PD0' could not be started. Hibernate operation: Could not execute JDBC batch update; SQL []; Batch entry 8 insert into VARIABLE_CONTEXT (VARIABLE_KEY, VARIABLE_VALUE, VARIABLE_TYPE, BUILDRESULTSUMMARY_ID, VARIABLE_CONTEXT_ID) values ('buildConfig', 'aaaaaaaaaaaaaaaaaaa...', 'MANUAL', '70713636', '70847129') was aborted.

I have a set of build output links and the user(QA) should be able to set them in the plan variable, so they can get the deployment much easier,but this is not possible at the moment. Is there a way to increase the variable capacity?

https://jira.atlassian.com/browse/BAM-9283