David

Expressions are the building blocks of PropertyWizard formulas. They are like phrases in a language. It’s useful to understand the different kinds of expressions in PropertyWizard, so you can put them together in different ways to write better formulas. There are four main kinds of expression in PropertyWizard: Literal expressions Identifier expressions Operator expressions FunctionRead more “Expressions in PropertyWizard for Revit”

When you make a new Revit parameter you choose the Type of Parameter, and that determines the type of data that the parameter can hold:

A PropertyWizard formula usually affects all the elements in the category you’ve selected. But what if you only want to affect a subset of the elements? You can do this with an if() function in this form: if(<filter criteria>, <your formula>, <target parameter>) The <filter criteria> is where you choose which elements to affect, andRead more “How to filter Revit elements using an if() function”

PropertyWizard’s if() function works in the same way as the native Revit one, which is described in the online Help here: http://help.autodesk.com/view/RVT/2022/ENU/?guid=GUID-A0FA7A2C-9C1D-40F3-A808-73CD0A4A3F20 The syntax is: if(<condition>, <result-if-true>, <result-if-false>) When PropertyWizard evaluates an if() function, it starts with the <condition>. For example in this formula: if(Level.Name == “Level 0”, “It’s Level 0!”, “It’s some other Level!”)Read more “How to use the if() function in PropertyWizard for Revit”

Revit’s ‘Filters’ feature is great for highlighting elements based on their parameters, but you are restricted in which parameters you can use. For Walls, for example, you cannot use any of these ‘Constraints’ parameters in a filter: PropertyWizard lets you overcome this restriction – because you can set up a formula to copy the valuesRead more “How to fix Revit’s Filters with PropertyWizard”

You can use the instr() function to find text in a PropertyWizard function. It finds the position of one piece of text inside another, and returns the character position of the first character of the found text, or -1 if the text isn’t found. So, say we want to find all the rooms where theRead more “How to find text with PropertyWizard”

It’s useful if your Revit Levels have a Level Code as well as a Level Name. That way, you can use the Level Code in your formulas for door numbers, room numbers, etc: Level Name Level Code Level 0 00 Level 1 01 Level 2 02 etc. etc. Level Names and Level Codes You couldRead more “How to generate Level Codes in Revit with PropertyWizard”

If you are creating parameters in projects that have Groups, and you are using PropertyWizard, you should be aware of this setting in the Parameter Properties dialog: What does the setting do? Well, it only has an effect if you’re using groups, and it’s only active for instance parameters. For example, imagine you add aRead more “Creating Revit Parameters to use with Groups and PropertyWizard”

Coordinates are vital, but Revit does not give you many ways to access them. To show them on sheets, you have the Spot Coordinates tool, but if you want to schedule them you are out of luck. Fortunately, PropertyWizard makes it easy to access coordinates. This is a quick walkthrough. Elements in Revit have aRead more “How to access Coordinates with PropertyWizard”

The third tutorial in PropertyWizard Help shows you how to join text values together using the ‘+’ operator: