@staticmethod<EOL><INDENT>def param_set(param):<DEDENT>
instance = param.effect.instance<EOL>return '<STR_LIT>'.format(instance, param.symbol, param.value)<EOL>
``param_set <instance_number> <param_symbol> <param_value>``

set a value to given control

e.g.::

    param_set 0 gain 2.50

:param Lv2Param param: Parameter that will be updated your value