# Amplitude Spectrum of FM wave from Bessel First order

given the values for $\beta=5$, for the Bessel of the first order:

$J_{0}(5)=-0.26, J_{1}(5)=0.34, J_{2}(5)=0.49...$

in order to plot the amplitude spectrum of the FM wave, do you treat the negative numbers as absolute? The $J_{0}(5)$ amplitude should be $|J_{0}(5)|$ ?