# FAQ

#### How to use dynamic value in text

You can use [accessors](https://docs.acho.io/app-builder/app-construction/accessors "mention") to dynamically display values from [query](https://docs.acho.io/app-builder/app-construction/query "mention"). Within a Text or Rich Text element, use ${#query\_name} to access the query result data.

<figure><img src="https://3574406564-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MB_fx7PCUqvFEdrucJC%2Fuploads%2Fcvl3pcL8viNcsJZfBlwJ%2Fimage.png?alt=media&#x26;token=01579d8f-c7a9-4ff1-affd-135caa19b388" alt=""><figcaption><p>An example that uses value from the 'monthly_metrics' query in rich text</p></figcaption></figure>

#### Text size and typography

You can edit the typography of each text element. Click the element you want to edit, within right panel, go to CSS-> Typography. Here you can set font size, color, and more.

See more detail at [typography](https://docs.acho.io/app-builder/app-construction/elements/css-styles/typography "mention")

#### How to display single value

You can use [accessors](https://docs.acho.io/app-builder/app-construction/accessors "mention") to dynamically display values from [query](https://docs.acho.io/app-builder/app-construction/query "mention") or app data.&#x20;

#### Can I write code in action flow

Yes.&#x20;

#### Can I write custom data visualization code

How to na