Rename device Macro

Hoping someone might be able to help me with this.  BRand new to python so hacking my way though this.

Aim of user action is to rename a macro dial of a device.

Here's my code:


def rename_macro(self, action_def, args):

device = action_def['device']

arg_split = args.split()

self.canonical_parent.log_message('rename_macro called for device=%s with args=%s' % (action_def['device'], args))

for i, p in enumerate(device.parameters):

self.canonical_parent.log_message('%s: %s range=%s - %s' % (i, p.name, p.min, p.max))

self.canonical_parent.log_message(arg_split[0], '++', arg_split[1])

device = action_def['device']

device.parameters[1].name = 'Hello'

I cannot get this to do the hardcode change of Macro 1 (or is parameters[1] actually Macro 2?).  Once I get that working, the intention is to use arg_split[0] and arg_split[1] from the arguments to specify the change as in:
device.parameters[arg_split[0]].name = arg_split[1]
X-Clip would look like this: [] 1/USER_DEV(1) CHGLAB 1 Hello

Any ideas where I am going wrong with the syntax on the hardcoded version and then also a view on the argument form.

Thanks  in advance.