how can we apply custom format M,K to value axis labels for negative values?

In Design Studio 1.6 SP2

Format for data labels and value axis in additional properties allows to set format either [>999999] #,##0,,"M";[>999] #,##0,"K";#,##0; or [<-999999] #,##0,,"M";[<-999] #,##0,"K";#,##0;. I want to set both for the Infochart. Please help