old_root_overlay_label="${old_root_overlay_label}-${_PARAMETER#persistence-subtext=}"
old_home_overlay_label="${old_home_overlay_label}-${_PARAMETER#persistence-subtext=}"
custom_overlay_label="${custom_overlay_label}-${_PARAMETER#persistence-subtext=}"
old_root_overlay_label="${old_root_overlay_label}-${_PARAMETER#persistence-subtext=}"
old_home_overlay_label="${old_home_overlay_label}-${_PARAMETER#persistence-subtext=}"
custom_overlay_label="${custom_overlay_label}-${_PARAMETER#persistence-subtext=}"