abaqus scripting for add anew field

Hi, i am very new to abaqus scripting. i did a transient thermal analysis. after i created new step, new frame and new field. type of my field was set as SCALAR.

then i wrote following 3 codes.

temperaturei= myOdb.steps[stepName].frames[10].fieldOutputs['NT11'].values[1000]

temperaturej= myOdb.steps[stepName].frames[11].fieldOutputs['NT11'].values[1000]

total=( temperaturej-temperaturei)/2

nodeLabelData=1001

then i want to add this "total" to created field. i wrote following code.

myField.addData(field=Total)

it gave as syntex error. then i checked abaqus manual and changed it with various way. (i really don't know what they are)

these are some tries i did

1. myField.addData( position=INTEGRATION_POINT, instance=myInstance, data=Total)

2. myField.addData( position=NODAL, instance=myInstance,labels=nodeLabelData, data=Total)

3. myField.addData( position=NODAL, instance=myInstance,labels=nodeLabelData, field=Total)

But all failed to add 'total' to myField. can anyone support to solve this issue.