Jira API - how to get test execution result from project with all custom fields added

[Matias Esteban Munoz Palacios]

i want to get test execution result from a specifict Project with all custom fields added.

i tried by the next request:

jira_server/tests/1.0/reports/testresults?jql=&maxResults=10000&isLast=true&tql=testResult.projectKey+IN+('Project')+AND+testCase.onlyLastTestResult+IS+false

but not returned the all custom fields.