Events for spawn:
onplayertouch > Player > VCE_ifVariable bought_light 1
onPlayerTouch > Named brick: Fakespawn > SetPlayerTransform
onVariableFalse > Player > SetPlayerLight > Off
Events for a button that gives you a light:
onActivate > PLayer > VCE_modVariable bought_light set 1
onActivate > Player > ChangePlayerLight > (Whatever light you need)
Also you will need Chrono's light events for this