Form 11S -

[Chupacabra]

Good morning,
this year for the first time I have received form 11S iso 11 as i declare tax for the sole purpose of income from 2nd property.
207 - net rental income after expenses -
after calculating gross rent taken off expenses and 75pc interests on mortgage I actually am at a loss -881!!! as one of the room was left empty for few months
.In the past if at a loss the figure to indicate was 0.00 but in form 11s is not specified. can any one advise what is correct to indicate.

thanks