Why changesTo() function does't work?

[jamesgo]

I have a UI action to set change state to pending:

current.state = '-5';

then I use a business rule to check it:

if (current.state.changesTo('-5'))

why this doesn't work? the condition always return false...

[Aaron40]

Thanks Capa!

[chaitu5]

current.state.changes()&&previous.state=='<previous state>';