how to make a 0 value in to a dash "-"

[#1]

[sunny_talwar]

Within a chart you can replace null to be shown as '-'. PFA

[Clever_Anjos]

Use and if to bring null when it´s 0, something like

if(sum(MyValue)>0,sum(MyValue),null())

[#4]

Thankyou, it worked.