How to change value of existing row and column in a data table

Hello,
Iā€™m getting target invocation exception error message,
Please guide

I want to update the datatable after every time http request is run
the columns willbe
{api link , status code , response like (successful, authorized), Action(data received,sent email for errorcode like 401,403,500), dateTime(current datetime)}
how can I append the values of the these rows

all the api are called in different state in reframework

I have total 6 apis , but called for 10 times . This to check the error occured and time of that . like a log to scale the error handling

You can take a look at his post:

Dear all,

is there anyway to replace in between data?
e.g. SLM1,2,3!
to replace anything that is from SLM to the exclamation mark? as the numbers in between might differs. (Exclamation mark is a required data.)

Thanks, This help me to solve my issue