Cancellation Student pass, overstay?? helpppp

[Maxx132]

So I have completed my study in sg , I already give back my student pass to ICA and they issued to me a short term social visit pass in letter form

It says

This documents serves as visit pass issued to the student under regulation 12 of immigration regulations. This visit pass is valid from 31/10/2018 until 13/12/2018 or the last date which students passport or other travel document is valid , whichever the earlier

So my question is does this mean that this only valid for single entry and once I go back to my country its not longer valid ?

Coz I went back before 13 and come here again from 8 until today *23 december and they already stamp me a white card

[sundaymorningstaple]

Unless it is stamped with multiple entry, it's only a single entry which means as soon as you leave Singapore travel on that visa is over.

[Maxx132]

Ahh I see , thanks for the answer ^^