Expression Builder With Expression Builder you can build for example a path by using expressions that contain text and/or variables. Open Expression BuilderIn many nodes, there is a pencil icon on the right of the field. If you select it, Expression Builder is opened.Create an expressionTo build an expression, follow these steps:Custom variablesCustom Variables are variables that are not by default present in the system and that were introduced by a custom action. Adding a variableIf a specific variable is not available, you can create it by adding a variable.Variable optionsYou can select a default variable and edit the options to change the output of the variable.ModifiersYou can select a variable in your expression and modify it to customize the result of the variable value, based on the position of its characters or on its length.Change the syntaxChange the value type