Help solve my VPN PPTP

Good day

any one can solve my problem base on my diagram from my loptop connect VPN to router why i can’t ping the router A when i connect to router B and same also when i connect to router A i can’T ping router B but my router B and route A can ping each other and woking fine
Capture.PNG

Hi
in router A add route to router B ip address and in Router B add route to Router A ip address

hello thank you for reply my post sorry by the way im not understand what do you mean, can you give me more specific please

your welcome

for example my pptp server is in router A and range of the ip address in Router B is 192.168.4.0/24 I add the ip address 192.168.4.0/24 ( router B ip range ) in my pptp server secret rules Routes option to router A - blow picture
Snap1.jpg
and in the router B, enter range of the router A ip address ( Router A ip range: 192.168.5.0/24 )
in winbox go to IP > Routes and add rule like this
Snap2.jpg

Hello Sir

Good day Sir i confuse for your setting also i try not wokring even my VPN dial up can connect for that configuration… my questions how i can get PPTP gateway connections from Router B?