How to pass variables in expressions when i am not using = symbol in variable declaration

[qlik4asif]

I am aware of passing variables in expression when i give = in variable declaration

In Variable declaration

vMaxDate

=Max(Month)

Eg1-----  =If(Month>Date(AddMonths(vMaxDate,-12),'YYYY-MM') and YTD>0,DateMonth)

Eg2-----  =Num(Sum({<Region={'Global'},Month ={">$(=Date(AddMonths(vMaxDate,-12),'YYYY-MM')) <=$(vMaxDate)"}>} YTD), '##.##')

Eg3-----  ==Num(Sum({<Function={'XXXXX'},Month={'$(vMaxDate)'}>}YTD),'##.00')

Now my Question is how to write whe i have not included = symbol in variable declarartion

vMaxDate

Max(Month)

Thanks in advance

[Anil_Babu_Samineni]

Perhaps these?

If(Month>Date(AddMonths($(=vMaxDate),-12),'YYYY-MM') and YTD>0,DateMonth)

Num(Sum({<Region={'Global'},Month ={">$(=Date(AddMonths($(=vMaxDate),-12),'YYYY-MM')) <=$(=vMaxDate)"}>} YTD), '##.##')

Num(Sum({<Function={'XXXXX'},Month={'$(=vMaxDate)'}>}YTD),'##.00')

[qlik4asif]

I have tried this but not working