# Callback (mutate_step_readers)

Add user(s) to step readers or set (override) step reader(s) using processing variables

# Config

mutate_step_readers:

	config:

		# Required | Type: array | Default: []
		# Steps for which are readers mutated
		steps: ["mystep"]

		# Required | Type: array | Default: []
		# List of user IDs
		users: ["{$_process->roles["@creator"][0]->id}"]

		# Optional | Type: string | Default: override
		# Whether users should be added or override actual readers
		#
		### Examples
		### - add
		### - override
		mode: "override"
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