API upload form-data posibble to have multiple files at one object?

I have a test object to upload form-data.
and i have multiple files for test data, is that possible to have multiple files at one object?
if possible, how do I call them in test script?

my current script:
def response = WS.sendRequestAndVerify(findTestObject(‘Web Service Request/testinvalid’))
WS.verifyResponseStatusCode(response, 201)

Hi @Gan_Jyi_Yng,
It is possible to have multiple files per one request object. Please use RestRequestObjectBuilder if you want some aid in constructing such a request in test script. You can refer to https://docs.katalon.com/javadoc/com/kms/katalon/core/testobject/RestRequestObjectBuilder.html for more details.