How to sort files before inserting to worksheet

I am using a macro to insert picture from subfolders to worksheet.Picture name is in the order 0,10,30,60,90,120,150,180,210,240,270,300,330 etc....
Now its inserting picture in the order

0 10
120 150
180 210
240 270
300 30
330 60
90

But The output i required is

0 10
30 60
90 120
150 180
210 240
270 300
330

Pls help..

Code i am using is....

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