Need some help on Codecademy.com

Hello there, i'm on codecadyme at the JavaScript Quick Guide, but i'm stuck in this one: http://www.codecademy.com/courses/javascript-intro/3#!/exercises/7 this is what i have to do: // Example switch statement. typeof returns the type // of the value as a string. For example, the type of // a string is 'string', the type of a number is // 'number', and the type of an object is 'object'. switch (typeof 'foo') { case 'string': // some code // If you don't return in the block, you should // always have a break afterwards. break; default: //block } // Write a function that uses switch statements on the // type of value. If it is a string, return 'str'. If it // is a number, return 'num'. If it is an object, return // 'obj'. If it is anything else, return 'other'. and this is what i did : function detectType(value) { switch (typeof value) { case 'string': return 'str' ; } switch (typeof value) { case 'number': return 'num'; } switch (typeof value) { case 'objet': return 'obj'; } default: return "other"; } return value; } </> I'm a noob, so i don't know whats missing or wrong, would you kind people please help me? thank you.