In the robot that passes the parameter, it is necessary to use the "Run" action.

In the "Properties" section (the "Parameters" block) you should fill in the fields:

Parameter file template:

It is necessary to change in the template the value to be passed to the second robot and the name of the variable to which this value will be written by the second robot. The changes should be made in the InOutResource parameter.

Next, it is necessary to specify the type of the variable. In this case, the variable "String" (RobinString) is specified.

The following is the record format for specifying the type of value to be passed:

When passing several values at once, it is necessary to add these values in the line below.