<cfscript>
    myArray1 = [67,12,45,98]; 
    writeOutput("Before reverse : ");
    writeDump(myArray1);
    myArray2 = reReplace( serializeJSON( myArray1[::-1] ), "\[|\]", "", "ALL" );
    myArray1 = listToArray( myArray2, ",", false, true );
    writeOutput("After reverse : ");
    writeDump(myArray1);
</cfscript>

Output :