# bohr-sommerfeld quantiztion condition from semiclasical WKB [duplicate]

in WKB the quantization conditions are

$$\oint _{C} p.dq =2\pi n \hbar \tag{1}$$

and the wave function is $$\Psi(x)= exp \left( \frac{iS[y(x)]}{\hbar} \right), \tag{2}$$

but what boundary conditions must I impose to this wave function if I want to obtain borh sommerfeld conditions ??