Two type profit on stacked column chart up and down

[jyaul786]

Dear Friends,

i have data buy profit, sell profit by department: 

Department	Buy Profit	Sell Profit
Dep1	10	55
Dep2	25	44
Dep3	22	12
Dep4	36	36
Dep5	47	39

i want to display stacked column chart Buy Profit above 0 x axis and Sell Profit below 0 x axis so that i created measure like: 

Buy Profit_ = SUM(Profit[Buy Profit])

Sell Profit_ = SUM(Profit[Sell Profit])

Sell Profit -ve = -[Sell Profit_]

and visual:

but i am getting -ve y axis. how can i solve this without being -ve( want to show always +ve) or do you have any custom visual to short out this issue