where is Touch input index count

is there a way to find out how many fingers are touching on screen ? i am checking for 2 fingers touching on screen to fire drag event but when third finger touches and first one leaves i cant drag anymore. There should be a finger index count somewhere so that i only check if its more then one then drag or zoom… Do i need to map all touch posibilities and count it myself in every thick ? it doesnt seem the right way…

i found “get number of entries in ETouchIndex” but it gives the maximum number that is 12