Adding multiple `Helpers` to template file

I am trying to add multiple helper in hbs file. But getting error. can't I add multiple helpers?

any one help me?

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1.card.balances.current-balance : number value getting
2.convert-to-currency : converting to currency
3. is-empty-value : adding hyphen if value is empty

I written helpers for some other reasons. now i am trying to use all togather, but not works. only considers as empty value