How can I correctly implement this Meijer G-function in MATLAB for the given equation with specific parameters ?

I'm new to matlab and I'am trying to implement the above Meijer-G function but I'm not able to get the appropriate answer as per the research paper. Below is my Code, please help me for any correction.

mg_a = -y1 / 4;

mg_b = -y1 / 4 + 1;

mg_c = [y2 / 4, (y2 + 2) / 4];

mg_d = [-y2 / 4, (-y2 + 2) / 4, -y1 / 4, -y1 / 4];

G_function = meijerG(mg_a, mg_b, mg_c, mg_d, mg_z);

Answer 1

[Torsten]

a,b,gamma,y1 and y2 are given as numerical values ?

Then use

a = ...;
b = ...;
ggamma = ...;
y1 = ...;
y2 = ...;
a1 = -y1/4;
a2 = -y1/4+1;
b1 = [y2/4,(y2+2)/4];
b2 = [-y2/4,(-y2+2)/4,-y1/4,-y1/4];
z = (a*b)^2/(16*ggamma);
G_function = meijerG(a1,a2,b1,b2,z)

[Sahil]

Yes Sir, a,b,gamma,y1 and y2 are given as numerical values.