In particular, when spreading a tibble, dplyr name the columns with ` ` (in case of strings or dates) and I noticed that it is not interchangeable with neither ' ' nor "".
After having spreaded a tibble I´ve ended up with names in the columns. And I was trying to filter with `` and it was not working.
pms$releases$date_201803$table_6443 %>%
filter( `Variável (Código)` == "8677", `Tipos de índice (Código)` %in% c("40311", "40312"))
But the alternative bellow works fine, and I was trying to understand the relation between the types of quotation.
colunas <- c("Variável (Código)", "Tipos de índice (Código)")
pms$releases$date_201803$table_6443 %>%
filter(!!as.name(colunas[1]) == "8677", !!as.name(colunas[2]) %in% c("40311", "40312"))