Modified area: =dqInfo.fieldbyname ('building area'). As a string to read

Area :=dqInfo.fieldbyname ('building area'). asfloat

Relatively direct if(Area & gt；; 140) ...

Shui Lu is plastic surgery. I don't know what you do with it. If you specify a value from the dataset, you can.

Shui Lu: =dqInfo.fieldbyname ('field'). AsInteger, but the field type must be plastic.