Bayesian inversion

Dear technical team,

thanks for the wonderful job you guys done here.
in my work i am using Bayesian analysis, the data consists of a single measurement, but having a row vector. when solving the inverse problem the results are not accurate. can you please resolve this issue, the data code is shown below where Vm has length of 1x5000.

myData.y = Vm’; % single measurement data
myData.Name = ‘Vm’;