Hi,
hp MUST be a string variable, like so:
string my_key = "hp";
Debug.Log (GetComponent<PlayMakerHashTableProxy>().hashTable[my_key]);
else if you want to directly get the key "hp", then put that as a litteral string like so:
Debug.Log (GetComponent<PlayMakerHashTableProxy>().hashTable["hp"]);
Bye,
Jean