[Closed] help finding items Arrays

I’m trying to find two vertices that have the same point position. by comparing a vector coordinate with an array of vector coordinates. I’m using the findItem method. It doesn’t work if i pass the item as a variable.

for example this doesn’t work.
testArray = #( [1,2,3] , [3,2,1], [1,3,2] );
testVector = [3,2,1];
findItem testArray testVector;

returns 0 or false

but this does
testArray = #( [1,2,3] , [3,2,1], [1,3,2] );
findItem testArray [3,2,1];

returns 2, the second item in the array.

Any help is appreciated!