Error while evaluating TimerFcn for timer Cannot create variable in workspace

I get the error "Error while evaluating TimerFcn for timer 'simulinkcycle' Cannot create variable 'U1' in workspace" when running my timer function for a simulink simulation:

function [Sim] = Simulink_Simulation
Sim = timer('Name','simulinkcycle',            ... 
                'Period',900,                   ... 
                'StartDelay',0,                 ... 
                'TasksToExecute',inf,           ... 
                'ExecutionMode','fixedSpacing', ... 
                'TimerFcn',@SimStart);       
start(Sim);
function SimStart(a,b)    
sim('File.slx',100000);           
end
end

The simulation in Simulink works fine when I run it via the run button or with "sim('File.slx',100000)" in the command window.

Answer 1

[Jan]

What happens, if you set the TimerFcn to:

'TimerFcn', @(TimerH, EventData) sim('File.slx', 100000)