1. Description

It is a conditional component designed to create a loop that will repeat while the checked condition is true.

The block (Fig.1(1)) is used in space to build the Flow. The settings panel for this component opens (Fig.1(2)) when you click on the block.

Fig.1. While component

1.1. While block

The block consists of the following elements:

1. The name of the component;
2. in branch - receiving (connecting with the previous block) branch;
3. do branch - execution of the Flow scheme on this branch occurs when the condition specified in the Expression field is met;
4. else branch - execution of the Flow scheme on this branch occurs when the condition specified in the Expression field is not met;

5. out branch - execution of the Flow scheme on this branch occurs if the condition specified in the Condition field is not met or after execution of the Flow scheme on the do branch the number of times entered in the settings. The maximum number of passes is set in the Max steps field. Outgoing branch (connecting to the next block).

1.2. While settings panel

It consists of the following elements:

1. Condition;
2. Max steps;
3. Break;
4. Add limit.

1.2.1. Condition

The test condition is entered here.

All variables in Webitel are marked like this - ${ }. The variable name is enclosed in curly braces. The next step is to specify the condition.

For example, it is necessary to check whether the variable out_w is more significant than zero. The field entry will look like this:

${out_w}>0 

If the condition is met, the do branch is used.

1.2.2. Max steps

Here you enter the maximum number of passes on the do branch - the condition entered in the Condition field is met.

It is used to avoid looping of the circuit.

1.2.3. Break

1.2.4. Add limit

Fig. 2. Setting a limit