Aggregate formula sumIF,AverageIF problem for sales calculation more than 10000

Aggregate formula sumIF,AverageIF problem for sales calculation more than 10000

Dear Sir, I am working on Aggregate sumIf formula for sales report But unable to make it . There is a error coming specific formula is invalid .Please check my formula and find the problem . I think syntax of formula is not correct thats why its showing error .Please give me a demo example for same .Below is my formula 

sumif(( "Ford details"."amount" >10000))

ford detials is sales report 
amount is Ford details Column 

I have to calculate Amount greater than 10000. I have also attached the screenshot

Please Give Aggregate  formula syntax for SumIF, count IF , Average IF