I don't think you can transfer multiple assets in one operation unless you used batch command to submit your pre-built transfer commands in bulk.
>> h batch
Usage:
batch <method_name> <parameters_list> Takes any no_prerequisites command and an array of its arguments and returns an array of results. Example: batch blockchain_get_blockhash [[1], [2]]
Takes any no_prerequisites command and an array of its arguments and returns an array of results. Example: batch blockchain_get_blockhash [[1], [2]]
Parameters:
method_name (string, required): The command name for calling
parameters_list (parameters_list, required): The list of list of parameters for this command, the return will be the list of execute result of corresponding parameters
Returns:
variants