Problems with selection colomns

It works

At the end I changed the selecitzeinput statement in the ui.r

selectizeInput('e2', 'Auswahl', selected = names(db2), choices = names(db2), multiple = TRUE),

and the last statement in my server.r

db2out <- db2out[db2out$Metric.ID == input$MetIDlist,]  # Missing comma at the end

db2out[, input$e2, drop = FALSE]
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