# Properties Functions, Types, and Services have properties that are visible in the Properties tab. Properties can be static or dynamic. Static properties are set at design time and cannot be changed at runtime. Dynamic properties can be changed at runtime by using an Expression. Property values are usually represented in a text format that fits the type of property. Some examples are: * Complex types are saved as JSON. For example, a Property of type Person might have a value of `{"Name":"John", "Surname":"Smith"}`. * Lists are saved as JSON, e.g., `["abc","def"]`. * Database functions have a ‘Connection string’ property that is saved as is, e.g., `Data Source=.\dbServer;Initial Catalog=mydb…`. * Expressions are saved as `=expression`. Some of the formats have an editor that appears as an icon next to the value or is available in the dropdown, as shown in the next section. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.linx.software/main-concepts/properties.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.