Error Inserting into a postgresql database through a stored

I have a c# application that needs to write into a postgresql table

using a stored procedure.

The stored procedure is developed and tested. It is working correctly when i tested

it manually using the select script facility in postgresql

When tried to insert from my C# application i got the error below:

System.InvalidCastException: 'Can't write CLR type System.Int32 with handler type TextHandler'

My guess is that there is probably a disconnect between the data been inserted and the

respective datatypes in the database.

I have tried to check the datatypes for the 7 parameters but cant resolve it

I attach a word file that contains the details of ALL that i have done step by step

I will be grateful to have any input that can help to resolve the issue

Olukay