Show a status text on the node

The node status provides a lot of information to the user (in the flow editor). For example:

The node status consists of three properties:

• text: a short textual description (under <20 characters).
• fill: the color of the status icon (red, green, yellow, blue or grey).
• shape: the shape of the status icon (ring or dot).

The following animation shows how to display an error in the blockly node's status:

The status will remain unchanged, until a new status is displayed or the flow is redeployed.