Chrono's code splits the words up in a string. If you want to split it at any spot, use this:
%str0 = getSubStr(%sourceString,%startingPosition,%lengthOfCut);
%str1 = getSubStr(%sourceString,%startingPosition + %lengthOfCut, strLen(%sourceString));
%startingPosition starts at 0 (i.e. If you had a string "Hello World", The "H" would be at 0, the space would be at 5.)