vkrm1310

My dataset query is this select application_name, sum(api_access_time) as api_access_timefrom api_statswhere api_name = $P{API_NAME}group by application_name And I already have the input parameter defined in the name api_name = $P{API_NAME} with the prompting on.So when I give the input in the prompt window I need to get the pie chart for the given input, instead I'm getting the plain white document. Please help me with this.