Error: Invalid parametertype used at function 'ge'

When getting an error calling the target system as below:

Error: Invalid parametertype used at function 'ge' 

Date format to be changed from 

((CHANGED_DT ge'2020-08-10T00:00:00') and (CHANGED_DT le'2020-09-22T00:00:00'))


to


((CHANGED_DT ge datetime'2020-08-10T00:00:00') and (CHANGED_DT le datetime'2020-09-22T00:00:00'))

Hope this works!!!