How can I use complex number to edit formula ?

[jli]

I need to edit a formula, but the input is complex number. I know the formula cannot accept complex number, so how can I do it?

[Al_S]

Rather than using a formula node, you can use LabView's numeric functions to code the forumla. You can convert a complex number to its rectangular or polar coordinates and back again using functions in the Numeric >> Complex function palette.