Hi, please see this: 

The following YAML bring up an error
```
```{r}
#| echo: c(3)
month <- "July"

str(month)
```
```

But using an = sign works:
```
```{r}
#| echo= c(3)
month <- "July"

str(month)
```
```

https://stackoverflow.com/questions/72217651/quarto-rmarkdown-code-block-to-only-display-certain-lines
2022-05-13T09:03:41Z
plukethep
closed
YAML chunk options inconsistent use of : and =
https://github.com/quarto-dev/quarto-cli/issues/863