Calculate Using Microflow

while debugging the list with aggregate action activity for sum of objects throws below exception using float variable:

Mendix.Modeler.Microflows.Debugger.DebuggerException: java.lang.Float cannot be cast to java.lang.Double
   at Mendix.Modeler.Microflows.Debugger.DebuggerResponse..ctor(String requestActionName, String responseText) in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Core\Microflows\Debugger\DebuggerResponse.cs:line 27
   at Mendix.Modeler.Microflows.Debugger.DebuggerClient.PerformRequest(DebuggerRequest request, Int32 timeout) in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Core\Microflows\Debugger\DebuggerClient.cs:line 166
   at Mendix.Modeler.Microflows.Debugger.DebuggerClient.GetObject(Guid debugId, String variableName) in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Core\Microflows\Debugger\DebuggerClient.cs:line 125
   at Mendix.Modeler.Microflows.Debugger.DebuggerController.GetObject(Guid debugId, String variableName) in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Core\Microflows\Debugger\DebuggerController.cs:line 128
   at Mendix.Modeler.Microflows.Debugger.VariablesTreeModel.<>c__DisplayClass3_0.<GetChildren>b__1() in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Core\Microflows\Debugger\VariablesTreeModel.cs:line 35
   at Mendix.Modeler.Utility.BackgroundUtil.<>c__DisplayClass1_0`1.<Do>b__0(Object s, DoWorkEventArgs e) in C:\jenkins\workspace\AppStudio-5-Modeler-LTS\src\modeler\Mendix.Modeler.Utility\BackgroundUtil.cs:line 28
   at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)