# Number
Number controls accepts whole numbers with decimal formatting options.
**Data type**: `number`
### Adding a Number control
1\. Edit your sheet\
2\. Click on the **Qommentary Writeback** extension\
3\. Expand **Input Column** section\
4\. Click on **Add column**
5\. Select **Switch** from the dropdown menu
6\. Add a **label** to be displayed as a column header
7\. Add a **field** name
{% hint style="danger" %}
If database is selected as data connection, then field name **must map** to destination table column name.
{% endhint %}
{% hint style="warning" %}
Field name cannot contain spaces.
{% endhint %}
8\. Click on **Done**
**Number** input column can now be updated and saved.
### Integer data types
By default, Number controls are setup as Integers. Integers will accept whole numbers which don't exceed 10 digits and where values lie between -2147483648 and +2147483647.
#### Changing the max integer limit
To customize the maximum amount of digits that can be entered, please follow these steps:
1\. Edit your sheet\
2\. Click on the **Qommentary Writeback** extension\
3\. Expand the **Input Columns** section and **Number** column\
4\. Search for the **Max integer limit** property
5\. Change the max value
The Number control will now prevent saving if the value exceeds the limit defined.
### Float data types
Floats will accept whole numbers with decimals and values must not exceed 15 digits.
#### Changing the max digit limit
To customize the maximum amount of digits that can be entered for the whole number part, please follow these steps:
1\. Edit your sheet\
2\. Click on the **Qommentary Writeback** extension\
3\. Expand the **Input Columns** section and **Number** column\
4\. Search for the **Max whole number limit** property
5\. Change the max value
6\. Change the decimals
The Number control will now prevent saving if the value exceeds the limit defined and will format decimals to the chosen value.
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