Access cell array from input in function

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Hello,

I have a function which recieves a cell array but when I want to access it I get an error Undefined function 'atomsStuct' for input arguments of type 'logical'.(even though it exists in my Workspace and the data is okay)

In this example I want to get from my input atomsStruct only the rows in which matchingResNameCells equals 1, for example if matchingResNameCells = {1,1,0,0,1} I want to return rows 1,2,5.

Thank you in advance.

function [wantedAtoms] = atomExtractionBySpecificMaterial(atomsStruct,material)
%Output the atoms that belongs to the specified material in the input
resNameCells={atomsStruct.resName}
%Remove leading and trailing whitespace from resNameCells 
newResNameCells =strtrim(resNameCells);
%Creates a Cell array that indicates what resName have the input material
matchingResNameCells = strcmp(material,newResNameCells)
%Output wanted atoms with matching material
wantedAtoms= atomsStuct(matchingResNameCells)
end