_self is opening new subtab in lightning console. I dont want to open link in new subtab. It should override primary subtab. The formula field is-
(" [" &
HYPERLINK("/apex/Sc_UpdateCustomerEnvironment_Update?action=Select&CaseNumid="&Id,"Select", "_self") & "]" &
" [" & HYPERLINK("/apex/Sc_UpdateCustomerEnvironment_Update?action=View&CaseNumid="&Id&"&EnvId="&CustomerEnvironment__c,"View Selected", "_self") & "]" &
" [" & HYPERLINK("/apex/Sc_UpdateCustomerEnvironment_Update?action=Edit&CaseNumid="&Id&"&EnvId="&CustomerEnvironment__c, "Edit Selected", "_self") & "]" &" [" &
HYPERLINK("/apex/Sc_UpdateCustomerEnvironment_Update?action=New&CaseNumid="&Id,"New Environment", "_self") & "]")