SASECRSP library value weighted returns _ finance

[jf3426]

I want to know how to access the value weighted return function from the SASECRSP library

my data is of the following form 

obs       |ticker |      date      | volume  |price 

 1          |  aapl |05/01/2023 |  121      | 100$

2           | civi   |05/01/2023  |  34        | 200$

.

.

.

200000 | .....|.....................|.............|...........

so I want to add a column in my data set that representes the value weighted return for the given stock for that specific date in the previous data dell, but I dont understand the documentation for retrieving the datat from the SASECRESP library 

Best Regards, 

Jose Fernandez