cb clear but keep the "&abcdefg"

[KINGMOFO]

Ok i have a code that clears a cb but i dont want it to delete the part that first shows up when you open the dialog that is the cb3 = "&adsasdADSa" part.
Is there a way i can clean the content of the combo box but keep that there please help here is my code i have as of now... im am still trying to get it to leave the cb3 = "&adsasdADSa" part. but maybe someone can get it faster than me...

Code:

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SendMessage id(3 hDlg) CB_RESETCONTENT 0 0