Cross reference and caption not working in Rmd file - r

Question

Can anyone help me understand how to write my header so that the figure caption and cross reference works?
I am practicing making captions and cross references to a simple plot in my Rmd file. I understand that to do so, I should add to my header: "output: bookend::pdf_document2" and "fig_caption = yes". Then, to a chunk called myfigure, I should add "fig.cap = "\label{fig:myfigure} My caption". To cross reference this figure I should write in the text "#ref(fig:myfigure)". My code is below. It won't knit because the formatting of the header is wrong.
---
title: "knit"
author: "Chase Hommeyer"
date: "4/1/2019"
output: bookdown::pdf_document2
toc: true
fig_caption: yes
---
```{r myfigure, fig.cap = "\\label{fig:myfigure} My caption"}
plot(pressure)
```
My plot is called \#ref(fig:myfigure).
Then, I tried deleting the whitespace before toc and fig_caption, and it knit, but no caption appeared, and the text literally printed "#ref(fig:myfigure)" instead of a cross reference. The header I tried is here:
---
title: "knit"
author: "Chase Hommeyer"
date: "4/1/2019"
output: bookdown::pdf_document2
toc: true
fig_caption: yes
---
I also tried adding "pdf_document:" to the header, but the same issue of no caption and the cross reference being literally "#ref(fig:myfigure)". This header I tried is here:
---
title: "knit"
author: "Chase Hommeyer"
date: "4/1/2019"
output: bookdown::pdf_document2
pdf_document:
toc: true
fig_caption: yes
---
Can anyone help me understand how to write my header so that it works?

Answer 1

use \ref{fig:myfigure} instead of \\#ref(fig:myfigure)
See RStudio Community Post

Answer 2

You have a wrong YAML header and some wrong understanding of referencing. I used this RMD file:
---
title: "knit"
author: "Chase Hommeyer"
date: "4/1/2019"
output:
bookdown::pdf_document2:
toc: true
fig_caption: yes
---
```{r myfigure, fig.cap = "My caption"}
plot(pressure)
```
My plot is called Figure \#ref(fig:myfigure).
First, break the line after output in the header. The whitespaces are very important in the YAML header!
Then, read the bookdown manual:
The label of a figure environment is generated from the label of the code chunk, e.g., if the chunk label is foo, the figure label will be fig:foo (the prefix fig: is added before foo). To reference a figure, use the syntax, where label is the figure label, e.g., fig:foo.
To reference your plot with the chunk name "myfigure", just write \#ref(fig:myfigure). The caption of the figure can be set via fig.cap in the chunk options.