# Dataset$update\_variables

### Dataset$<mark style="color:purple;">update\_variables</mark>(*variables*) → void

Batch update variable metadata attributes for all variables across tables in a dataset.

### **Parameters:**

**`variables` :&#x20;*****list(list)***\
A list of named lists of variables to update. Each variable is represented by a named list, with a mandatory `"name"` property, corresponding to the variable's name, and any metadata properties to update. To clear a metadata property, set it to `NULL`, otherwise omit it to leave a given property unchanged.

### **Returns:**&#x20;

**void**

### Examples:

```r
dataset = redivis$dataset("dataset.reference")

dataset$update_variables(list(
    list(
        # All attrs other than "name" are optional.
        # To remove a value, set it to None
        name = "var_name",
        label = "my_label",
        description = "my_description",
        valueLabels = list(
            list(value = "1", label = "Yes"),
            list(value = "2", label = "No"),
            ...
        )
    )
    ...
))
```


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