How do I set element gain for phased array

Im designing a phased array, and I want to change the element gain, how would I do that?

Answer 1

[Chunru]

freq = [0 1000 2000];    % freq vector
resp = [3 3 3];          % response in dB at different freq
a = phased.CustomAntennaElement('FrequencyVector', freq, 'FrequencyResponse', resp)

a = 
  phased.CustomAntennaElement with properties:

               FrequencyVector: [0 1000 2000]
             FrequencyResponse: [3 3 3]
       PatternCoordinateSystem: 'az-el'
                 AzimuthAngles: [-180 -179 -178 -177 -176 -175 -174 -173 -172 -171 -170 -169 -168 -167 -166 -165 -164 -163 -162 -161 -160 -159 -158 -157 -156 -155 -154 -153 -152 -151 -150 -149 -148 -147 -146 -145 -144 -143 -142 -141 -140 -139 -138 … ]
               ElevationAngles: [-90 -89 -88 -87 -86 -85 -84 -83 -82 -81 -80 -79 -78 -77 -76 -75 -74 -73 -72 -71 -70 -69 -68 -67 -66 -65 -64 -63 -62 -61 -60 -59 -58 -57 -56 -55 -54 -53 -52 -51 -50 -49 -48 -47 -46 -45 -44 -43 -42 -41 -40 -39 -38 -37 … ]
    SpecifyPolarizationPattern: false
              MagnitudePattern: [181×361 double]
                  PhasePattern: [181×361 double]
              MatchArrayNormal: true