Custom visual text input box

Hi community,

I need help on creating a text input box inside my custom visual.

When creating a text input box with the following code, the input is limited by 250 characters:

                "customTextInput": {
                    "displayNameKey": "CustomTextInput",
                    "descriptionKey": "CustomTextInput_Description",
                    "displayName": "Text Input",
                    "description": "Paste Text Input here.",
                    "type": {
                        "text": true
                    }
                }

Is there a way on creating a bigger text input box or how can I exceed the limit of 250 characters?

Thanks in advance!