BarsSince issue

hi all

this the code but can not get the number of days since the event happened.

ABM = LastValue( ValueWhen ( GapDown(),Ref(L,-1),1) ) ;
ABM_DAYS = BarsSince (ABM) ; // number of days since happend

thank you

You are not using BarsSince() correctly

It expects a Boolean type expression or an Array that logically represents a Boolean relationship.
ABM is a number, because of LastValue()

something like

BarsSince( ABM == L )
// or
BarsSince( ABM <= L )
// etc
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