how to search quotes by date on API v2

Hi, am making a rest api for fetching the quotes based on some parameters it works something like this

    if(req.body.checked){
        console.log(searchCriteria.length)
        if(searchCriteria.length) { 
            searchCriteria += `and(Quote_Stage:equals:${req.body.checked})`
        } else {
            searchCriteria += `(Quote_Stage:equals:${req.body.checked})`
        }
    }
    if(req.body.saleDate){
        console.log(searchCriteria.length)
        if(searchCriteria.length) { 
            searchCriteria += `and(Valid_Till:equals:${req.body.saleDate})`
        } else {
            searchCriteria += `(Valid_Till:equals:${req.body.saleDate})`
        }
    }

I want to get the quotes where the the current date is between the one submited from the client to the present day, doing it like how it is right now it only gets the quotes from that specific date

any help is appreciated