fellow a online training to test SSIS, the link is here in step3 no.2
the article https://msdn.microsoft.com/en-us/library/ms166797%28v=sql.120%29.aspx?f=255&MSPPError=-2147217396
show it should show an item Expressions in Properties panel, but I can't find it in my VS 2015 Shell, only like following:
https://drive.google.com/file/d/0B5F_qaK8bYV3RXdtd1U4ZVVoa2M/view?usp=sharing
test enviroment is following:
WINDOWS2012R2
MS SQL 2016 WITH SSIS SSAS
SSDT 14.0.60923 WITH VS2015 SHELL
THANK AND BLESSING
(BTW, WHY I CAN'T PUT IMAGES AND LINK HERE?)