Returning NAN

[Random Logic]

I am programming a few functions into an Adobe Acrobat PDF file and for some reason this isn't working. Am i missing something?

function psychro_pv1(db, wb, atm){var pvp = psychro_pvs(wb);var ws = (pvp / (atm - pvp)) * 0.62198;var hl = 1093.049 + (0.441 * (db - wb));var ch = 0.24 + (0.441 * ws);var wh = ws - (ch * (db - wb) / hl);event.value = atm * (wh / (0.62198 + wh)); }event.value = pvp;

edit: the function psychro_pvs is a working function established before this one.

Edited April 17, 2013 by Random Logic

[Ingolme]

If any of the arguments you're receiving could possibly strings you should ensure they're numbers.For example: db = Number(db);